128475172 has 36 divisors (see below), whose sum is σ = 261287040. Its totient is φ = 54138240.

The previous prime is 128475161. The next prime is 128475173. The reversal of 128475172 is 271574821.

It is not an unprimeable number, because it can be changed into a prime (128475173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 532972 + ... + 533212.

Almost surely, 2^128475172 is an apocalyptic number.

It is an amenable number.

128475172 is an abundant number, since it is smaller than the sum of its proper divisors (132811868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128475172 is an equidigital number, since it uses as much as digits as its factorization.

128475172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572 (or 329 counting only the distinct ones).

The product of its digits is 31360, while the sum is 37.

The square root of 128475172 is about 11334.6888797179. The cubic root of 128475172 is about 504.5912740281.

The spelling of 128475172 in words is "one hundred twenty-eight million, four hundred seventy-five thousand, one hundred seventy-two".