27133640 has 16 divisors (see below), whose sum is σ = 61050780. Its totient is φ = 10853440.

The previous prime is 27133621. The next prime is 27133661. The reversal of 27133640 is 4633172.

It can be written as a sum of positive squares in 2 ways, for example, as 24780484 + 2353156 = 4978^2 + 1534^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 339131 + ... + 339210.

Almost surely, 2^27133640 is an apocalyptic number.

27133640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27133640 is an abundant number, since it is smaller than the sum of its proper divisors (33917140).

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

27133640 is a wasteful number, since it uses less digits than its factorization.

27133640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678352 (or 678348 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 27133640 is about 5208.9960645023. The cubic root of 27133640 is about 300.4941485734.

The spelling of 27133640 in words is "twenty-seven million, one hundred thirty-three thousand, six hundred forty".