27478564 has 9 divisors (see below), whose sum is σ = 48105841. Its totient is φ = 13734040.

The previous prime is 27478559. The next prime is 27478567. The reversal of 27478564 is 46587472.

The square root of 27478564 is 5242.

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., 22638564 + 4840000 = 4758^2 + 2200^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27478564.

It is not an unprimeable number, because it can be changed into a prime (27478567) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 9174 + ... + 11794.

Almost surely, 2^27478564 is an apocalyptic number.

27478564 is the 5242-nd square number.

It is an amenable number.

27478564 is a deficient number, since it is larger than the sum of its proper divisors (20627277).

27478564 is an frugal number, since it uses more digits than its factorization.

27478564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5246 (or 2623 counting only the distinct ones).

The product of its digits is 376320, while the sum is 43.

The cubic root of 27478564 is about 301.7620891351.

It can be divided in two parts, 2747 and 8564, that added together give a palindrome (11311).

The spelling of 27478564 in words is "twenty-seven million, four hundred seventy-eight thousand, five hundred sixty-four".