128431804 has 24 divisors (see below), whose sum is σ = 238781088. Its totient is φ = 60234240.

The previous prime is 128431799. The next prime is 128431813. The reversal of 128431804 is 408134821.

It is a hoax number, since the sum of its digits (31) 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 7 ways as a sum of consecutive naturals, for example, 18112 + ... + 24184.

It is an arithmetic number, because the mean of its divisors is an integer number (9949212).

Almost surely, 2^128431804 is an apocalyptic number.

It is an amenable number.

128431804 is a deficient number, since it is larger than the sum of its proper divisors (110349284).

128431804 is a wasteful number, since it uses less digits than its factorization.

128431804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6405 (or 6403 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 128431804 is about 11332.7756529458. The cubic root of 128431804 is about 504.5344911318.

The spelling of 128431804 in words is "one hundred twenty-eight million, four hundred thirty-one thousand, eight hundred four".