28057730536 has 32 divisors (see below), whose sum is σ = 57405048480. Its totient is φ = 12750350400.

The previous prime is 28057730527. The next prime is 28057730557. The reversal of 28057730536 is 63503775082.

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, 337555 + ... + 412381.

It is an arithmetic number, because the mean of its divisors is an integer number (1793907765).

Almost surely, 2^28057730536 is an apocalyptic number.

It is an amenable number.

28057730536 is an abundant number, since it is smaller than the sum of its proper divisors (29347317944).

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

28057730536 is a wasteful number, since it uses less digits than its factorization.

28057730536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79105 (or 79101 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 46.

It can be divided in two parts, 280577 and 30536, that added together give a palindrome (311113).

The spelling of 28057730536 in words is "twenty-eight billion, fifty-seven million, seven hundred thirty thousand, five hundred thirty-six".