27964564 has 12 divisors (see below), whose sum is σ = 49153300. Its totient is φ = 13920768.

The previous prime is 27964553. The next prime is 27964567. The reversal of 27964564 is 46546972.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11088900 + 16875664 = 3330^2 + 4108^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 27964564.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27964567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14349 + ... + 16180.

Almost surely, 2^27964564 is an apocalyptic number.

It is an amenable number.

27964564 is a deficient number, since it is larger than the sum of its proper divisors (21188736).

27964564 is a wasteful number, since it uses less digits than its factorization.

27964564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30762 (or 30760 counting only the distinct ones).

The product of its digits is 362880, while the sum is 43.

The square root of 27964564 is about 5288.1531747861. The cubic root of 27964564 is about 303.5307424346.

The spelling of 27964564 in words is "twenty-seven million, nine hundred sixty-four thousand, five hundred sixty-four".