28637222916 has 24 divisors (see below), whose sum is σ = 66823051680. Its totient is φ = 9545331712.

The previous prime is 28637222843. The next prime is 28637222981. The reversal of 28637222916 is 61922273682.

It is a super-3 number, since 3×28637222916³ (a number of 32 digits) contains 333 as substring.

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, 398455 + ... + 464801.

It is an arithmetic number, because the mean of its divisors is an integer number (2784293820).

Almost surely, 2^28637222916 is an apocalyptic number.

It is an amenable number.

28637222916 is an abundant number, since it is smaller than the sum of its proper divisors (38185828764).

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

28637222916 is a wasteful number, since it uses less digits than its factorization.

28637222916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102323 (or 102321 counting only the distinct ones).

The product of its digits is 870912, while the sum is 48.

The spelling of 28637222916 in words is "twenty-eight billion, six hundred thirty-seven million, two hundred twenty-two thousand, nine hundred sixteen".