28616788956 has 24 divisors (see below), whose sum is σ = 76311437440. Its totient is φ = 8176225392.

The previous prime is 28616788943. The next prime is 28616788961. The reversal of 28616788956 is 65988761682.

It is a super-2 number, since 2×28616788956² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170337946 + ... + 170338113.

Almost surely, 2^28616788956 is an apocalyptic number.

It is an amenable number.

28616788956 is an abundant number, since it is smaller than the sum of its proper divisors (47694648484).

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

28616788956 is a wasteful number, since it uses less digits than its factorization.

28616788956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340676073 (or 340676071 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 66.

The spelling of 28616788956 in words is "twenty-eight billion, six hundred sixteen million, seven hundred eighty-eight thousand, nine hundred fifty-six".