27216404 has 12 divisors (see below), whose sum is σ = 47696628. Its totient is φ = 13588800.

The previous prime is 27216403. The next prime is 27216433. The reversal of 27216404 is 40461272.

It can be written as a sum of positive squares in 2 ways, for example, as 6240004 + 20976400 = 2498^2 + 4580^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27216403) 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, 1427 + ... + 7514.

It is an arithmetic number, because the mean of its divisors is an integer number (3974719).

Almost surely, 2^27216404 is an apocalyptic number.

It is an amenable number.

27216404 is a deficient number, since it is larger than the sum of its proper divisors (20480224).

27216404 is a wasteful number, since it uses less digits than its factorization.

27216404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9706 (or 9704 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 27216404 is about 5216.9343488298. The cubic root of 27216404 is about 300.7993644594.

Adding to 27216404 its reverse (40461272), we get a palindrome (67677676).

The spelling of 27216404 in words is "twenty-seven million, two hundred sixteen thousand, four hundred four".