27972512 has 24 divisors (see below), whose sum is σ = 55512576. Its totient is φ = 13874112.

The previous prime is 27972493. The next prime is 27972521. The reversal of 27972512 is 21527972.

It is a super-2 number, since 2×27972512² = 1564922855180288, which 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, 623 + ... + 7505.

It is an arithmetic number, because the mean of its divisors is an integer number (2313024).

Almost surely, 2^27972512 is an apocalyptic number.

It is an amenable number.

27972512 is a deficient number, since it is larger than the sum of its proper divisors (27540064).

27972512 is a wasteful number, since it uses less digits than its factorization.

27972512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7020 (or 7012 counting only the distinct ones).

The product of its digits is 17640, while the sum is 35.

The square root of 27972512 is about 5288.9046124883. The cubic root of 27972512 is about 303.5594958935.

The spelling of 27972512 in words is "twenty-seven million, nine hundred seventy-two thousand, five hundred twelve".