27681396 has 24 divisors (see below), whose sum is σ = 66166464. Its totient is φ = 9001920.

The previous prime is 27681361. The next prime is 27681421. The reversal of 27681396 is 69318672.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27640 + ... + 28623.

It is an arithmetic number, because the mean of its divisors is an integer number (2756936).

Almost surely, 2^27681396 is an apocalyptic number.

It is an amenable number.

27681396 is an abundant number, since it is smaller than the sum of its proper divisors (38485068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27681396 is a wasteful number, since it uses less digits than its factorization.

27681396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56311 (or 56309 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 27681396 is about 5261.3112434069. The cubic root of 27681396 is about 302.5027516085.

The spelling of 27681396 in words is "twenty-seven million, six hundred eighty-one thousand, three hundred ninety-six".