128570398 has 24 divisors (see below), whose sum is σ = 217924200. Its totient is φ = 56417760.

The previous prime is 128570389. The next prime is 128570401. The reversal of 128570398 is 893075821.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15028 + ... + 21976.

It is an arithmetic number, because the mean of its divisors is an integer number (9080175).

Almost surely, 2^128570398 is an apocalyptic number.

128570398 is a deficient number, since it is larger than the sum of its proper divisors (89353802).

128570398 is a wasteful number, since it uses less digits than its factorization.

128570398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7020 (or 6991 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 128570398 is about 11338.8887462573. Note that the first 3 decimals coincide. The cubic root of 128570398 is about 504.7159111886.

The spelling of 128570398 in words is "one hundred twenty-eight million, five hundred seventy thousand, three hundred ninety-eight".