61728395

61728395 is an eight-digit integer in the decimal system. It lies between 60,000,000 and 70,000,000 and is a composite number, as indicated by its divisibility by 5.

The number factors as 61728395 = 5 × 12,345,679. The cofactor 12,345,679 is notable for its digit pattern: it contains the digits 1 through 9 except 8, arranged in ascending order. Further factorization gives 12,345,679 = 37 × 333,667, so the full prime factorization of 61728395 is 5 × 37 × 333,667.

The digits of 61728395 are all distinct (6, 1, 7, 2, 8, 3, 9, 5). It is not divisible by 2, 3, or 9, but it is divisible by 5. The digital sum is 41, yielding a digital root of 5.

In relation to its factors, 12,345,679 has some well-known numerical curiosities: it satisfies 12,345,679 × 9 = 111,111,111, a repunit, and 12,345,679 × 37 = 456,790,123, a rearranged-sequence number. These properties highlight interesting connections between certain eight- and nine-digit patterns in base 10.

Overall, 61728395 is primarily of interest as a concrete example of a composite number with a neat factorization into small primes, namely 5, 37, and 333,667.