27920656 has 15 divisors (see below), whose sum is σ = 54137253. Its totient is φ = 13949760.

The previous prime is 27920609. The next prime is 27920693. The reversal of 27920656 is 65602972.

The square root of 27920656 is 5284.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 25847056 + 2073600 = 5084^2 + 1440^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 20476 + ... + 21796.

Almost surely, 2^27920656 is an apocalyptic number.

27920656 is the 5284-th square number.

It is an amenable number.

27920656 is a deficient number, since it is larger than the sum of its proper divisors (26216597).

27920656 is an frugal number, since it uses more digits than its factorization.

27920656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650 (or 1323 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The cubic root of 27920656 is about 303.3717983128.

The spelling of 27920656 in words is "twenty-seven million, nine hundred twenty thousand, six hundred fifty-six".