428875532568 has 128 divisors (see below), whose sum is σ = 1441598515200. Its totient is φ = 115327867392.

The previous prime is 428875532521. The next prime is 428875532581. The reversal of 428875532568 is 865235578824.

428875532568 is a `hidden beast` number, since 4 + 28 + 8 + 7 + 553 + 2 + 56 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8316880 + ... + 8368287.

It is an arithmetic number, because the mean of its divisors is an integer number (11262488400).

Almost surely, 2^428875532568 is an apocalyptic number.

It is an amenable number.

428875532568 is an abundant number, since it is smaller than the sum of its proper divisors (1012722982632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

428875532568 is a wasteful number, since it uses less digits than its factorization.

428875532568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16685206 (or 16685196 counting only the distinct ones).

The product of its digits is 129024000, while the sum is 63.

The spelling of 428875532568 in words is "four hundred twenty-eight billion, eight hundred seventy-five million, five hundred thirty-two thousand, five hundred sixty-eight".