128570872 has 24 divisors (see below), whose sum is σ = 254431800. Its totient is φ = 60900624.

The previous prime is 128570839. The next prime is 128570899. The reversal of 128570872 is 278075821.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19372 + ... + 25147.

It is an arithmetic number, because the mean of its divisors is an integer number (10601325).

Almost surely, 2^128570872 is an apocalyptic number.

It is an amenable number.

128570872 is a deficient number, since it is larger than the sum of its proper divisors (125860928).

128570872 is a wasteful number, since it uses less digits than its factorization.

128570872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44563 (or 44540 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 40.

The square root of 128570872 is about 11338.9096477571. The cubic root of 128570872 is about 504.7165314326.

The spelling of 128570872 in words is "one hundred twenty-eight million, five hundred seventy thousand, eight hundred seventy-two".