28277502532 has 12 divisors (see below), whose sum is σ = 49606624060. Its totient is φ = 14104181376.

The previous prime is 28277502479. The next prime is 28277502557. The reversal of 28277502532 is 23520577282.

It can be written as a sum of positive squares in 2 ways, for example, as 25003831876 + 3273670656 = 158126^2 + 57216^2 .

It is a super-2 number, since 2×28277502532² (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 3 ways as a sum of consecutive naturals, for example, 8640633 + ... + 8643904.

Almost surely, 2^28277502532 is an apocalyptic number.

It is an amenable number.

28277502532 is a deficient number, since it is larger than the sum of its proper divisors (21329121528).

28277502532 is a wasteful number, since it uses less digits than its factorization.

28277502532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17284950 (or 17284948 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 43.

The spelling of 28277502532 in words is "twenty-eight billion, two hundred seventy-seven million, five hundred two thousand, five hundred thirty-two".