28601836576 has 36 divisors (see below), whose sum is σ = 58864601502. Its totient is φ = 13679131136.

The previous prime is 28601836573. The next prime is 28601836577. The reversal of 28601836576 is 67563810682.

It can be written as a sum of positive squares in only one way, i.e., 26069331600 + 2532504976 = 161460^2 + 50324^2 .

It is a super-2 number, since 2×28601836576² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28601836573) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 827881 + ... + 861736.

Almost surely, 2^28601836576 is an apocalyptic number.

It is an amenable number.

28601836576 is an abundant number, since it is smaller than the sum of its proper divisors (30262764926).

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

28601836576 is a wasteful number, since it uses less digits than its factorization.

28601836576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1689673 (or 1689642 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 28601836576 in words is "twenty-eight billion, six hundred one million, eight hundred thirty-six thousand, five hundred seventy-six".