27880972 has 24 divisors (see below), whose sum is σ = 55883520. Its totient is φ = 11922960.

The previous prime is 27880939. The next prime is 27881027. The reversal of 27880972 is 27908872.

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, 17697 + ... + 19207.

It is an arithmetic number, because the mean of its divisors is an integer number (2328480).

Almost surely, 2^27880972 is an apocalyptic number.

It is an amenable number.

27880972 is an abundant number, since it is smaller than the sum of its proper divisors (28002548).

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

27880972 is a wasteful number, since it uses less digits than its factorization.

27880972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2181 (or 2179 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 27880972 is about 5280.2435549887. The cubic root of 27880972 is about 303.2280013729.

The spelling of 27880972 in words is "twenty-seven million, eight hundred eighty thousand, nine hundred seventy-two".