28477971708 has 24 divisors (see below), whose sum is σ = 66474925440. Its totient is φ = 9488896560.

The previous prime is 28477971671. The next prime is 28477971763. The reversal of 28477971708 is 80717977482.

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, 438448 + ... + 499191.

It is an arithmetic number, because the mean of its divisors is an integer number (2769788560).

Almost surely, 2^28477971708 is an apocalyptic number.

It is an amenable number.

28477971708 is an abundant number, since it is smaller than the sum of its proper divisors (37996953732).

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

28477971708 is a wasteful number, since it uses less digits than its factorization.

28477971708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940177 (or 940175 counting only the distinct ones).

The product of its (nonzero) digits is 11063808, while the sum is 60.

The spelling of 28477971708 in words is "twenty-eight billion, four hundred seventy-seven million, nine hundred seventy-one thousand, seven hundred eight".