27399012 has 24 divisors (see below), whose sum is σ = 64342656. Its totient is φ = 9074208.

The previous prime is 27398999. The next prime is 27399013. The reversal of 27399012 is 21099372.

It is a super-2 number, since 2×27399012² = 1501411717152288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27399013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5388 + ... + 9155.

It is an arithmetic number, because the mean of its divisors is an integer number (2680944).

Almost surely, 2^27399012 is an apocalyptic number.

It is an amenable number.

27399012 is an abundant number, since it is smaller than the sum of its proper divisors (36943644).

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

27399012 is a wasteful number, since it uses less digits than its factorization.

27399012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14707 (or 14705 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 27399012 is about 5234.4065566213. The cubic root of 27399012 is about 301.4706015465.

The spelling of 27399012 in words is "twenty-seven million, three hundred ninety-nine thousand, twelve".