27880464 has 20 divisors (see below), whose sum is σ = 72024656. Its totient is φ = 9293472.

The previous prime is 27880441. The next prime is 27880487. The reversal of 27880464 is 46408872.

It is an interprime number because it is at equal distance from previous prime (27880441) and next prime (27880487).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290374 + ... + 290469.

Almost surely, 2^27880464 is an apocalyptic number.

27880464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

27880464 is an abundant number, since it is smaller than the sum of its proper divisors (44144192).

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

27880464 is a wasteful number, since it uses less digits than its factorization.

27880464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580854 (or 580848 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 27880464 is about 5280.1954509279. The cubic root of 27880464 is about 303.2261597254.

The spelling of 27880464 in words is "twenty-seven million, eight hundred eighty thousand, four hundred sixty-four".