428675839508 has 12 divisors (see below), whose sum is σ = 857351679072. Its totient is φ = 183718216920.

The previous prime is 428675839469. The next prime is 428675839531. The reversal of 428675839508 is 805938576824.

428675839508 is an admirable number.

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, 7654925678 + ... + 7654925733.

It is an arithmetic number, because the mean of its divisors is an integer number (71445973256).

Almost surely, 2^428675839508 is an apocalyptic number.

It is an amenable number.

428675839508 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

428675839508 is a wasteful number, since it uses less digits than its factorization.

428675839508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15309851422 (or 15309851420 counting only the distinct ones).

The product of its (nonzero) digits is 116121600, while the sum is 65.

The spelling of 428675839508 in words is "four hundred twenty-eight billion, six hundred seventy-five million, eight hundred thirty-nine thousand, five hundred eight".