28802961636 has 24 divisors (see below), whose sum is σ = 68153488704. Its totient is φ = 9465761760.

The previous prime is 28802961623. The next prime is 28802961643. The reversal of 28802961636 is 63616920882.

It is a super-2 number, since 2×28802961636² (a number of 22 digits) contains 22 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, 16902295 + ... + 16903998.

It is an arithmetic number, because the mean of its divisors is an integer number (2839728696).

Almost surely, 2^28802961636 is an apocalyptic number.

It is an amenable number.

28802961636 is an abundant number, since it is smaller than the sum of its proper divisors (39350527068).

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

28802961636 is a wasteful number, since it uses less digits than its factorization.

28802961636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33806371 (or 33806369 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 51.

The spelling of 28802961636 in words is "twenty-eight billion, eight hundred two million, nine hundred sixty-one thousand, six hundred thirty-six".