128894875 has 32 divisors (see below), whose sum is σ = 169827840. Its totient is φ = 97477600.

The previous prime is 128894863. The next prime is 128894911. The reversal of 128894875 is 578498821.

It is a happy number.

It is not a de Polignac number, because 128894875 - 2⁷ = 128894747 is a prime.

It is a super-2 number, since 2×128894875² = 33227777602531250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 307416 + ... + 307834.

It is an arithmetic number, because the mean of its divisors is an integer number (5307120).

Almost surely, 2^128894875 is an apocalyptic number.

128894875 is a deficient number, since it is larger than the sum of its proper divisors (40932965).

128894875 is a wasteful number, since it uses less digits than its factorization.

128894875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564 (or 554 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 52.

The square root of 128894875 is about 11353.1878783010. The cubic root of 128894875 is about 505.1401434400.

The spelling of 128894875 in words is "one hundred twenty-eight million, eight hundred ninety-four thousand, eight hundred seventy-five".