128685052 has 12 divisors (see below), whose sum is σ = 225336496. Its totient is φ = 64303200.

The previous prime is 128685031. The next prime is 128685097. The reversal of 128685052 is 250586821.

It is a hoax number, since the sum of its digits (37) 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 3 ways as a sum of consecutive naturals, for example, 1728 + ... + 16135.

Almost surely, 2^128685052 is an apocalyptic number.

It is an amenable number.

128685052 is a deficient number, since it is larger than the sum of its proper divisors (96651444).

128685052 is a wasteful number, since it uses less digits than its factorization.

128685052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19668 (or 19666 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 128685052 is about 11343.9434060648. The cubic root of 128685052 is about 504.8658951822.

The spelling of 128685052 in words is "one hundred twenty-eight million, six hundred eighty-five thousand, fifty-two".