128672504 has 8 divisors (see below), whose sum is σ = 241260960. Its totient is φ = 64336248.

The previous prime is 128672497. The next prime is 128672513. The reversal of 128672504 is 405276821.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×128672504² = 33113226571260032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8042024 + ... + 8042039.

It is an arithmetic number, because the mean of its divisors is an integer number (30157620).

Almost surely, 2^128672504 is an apocalyptic number.

It is an amenable number.

128672504 is a deficient number, since it is larger than the sum of its proper divisors (112588456).

128672504 is a wasteful number, since it uses less digits than its factorization.

128672504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16084069 (or 16084065 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 128672504 is about 11343.3903221215. The cubic root of 128672504 is about 504.8494849282.

The spelling of 128672504 in words is "one hundred twenty-eight million, six hundred seventy-two thousand, five hundred four".