27564140 has 24 divisors (see below), whose sum is σ = 61290432. Its totient is φ = 10376960.

The previous prime is 27564113. The next prime is 27564167. The reversal of 27564140 is 4146572.

It is an interprime number because it is at equal distance from previous prime (27564113) and next prime (27564167).

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 7 ways as a sum of consecutive naturals, for example, 40196 + ... + 40875.

It is an arithmetic number, because the mean of its divisors is an integer number (2553768).

Almost surely, 2^27564140 is an apocalyptic number.

27564140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27564140 is an abundant number, since it is smaller than the sum of its proper divisors (33726292).

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

27564140 is a wasteful number, since it uses less digits than its factorization.

27564140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81097 (or 81095 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 27564140 is about 5250.1561881529. The cubic root of 27564140 is about 302.0750219301.

The spelling of 27564140 in words is "twenty-seven million, five hundred sixty-four thousand, one hundred forty".