27308920 has 16 divisors (see below), whose sum is σ = 61445160. Its totient is φ = 10923552.

The previous prime is 27308899. The next prime is 27308933. The reversal of 27308920 is 2980372.

It is a super-2 number, since 2×27308920² = 1491554223132800, which contains 22 as substring.

It is a congruent number.

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, 341322 + ... + 341401.

Almost surely, 2^27308920 is an apocalyptic number.

27308920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27308920 is an abundant number, since it is smaller than the sum of its proper divisors (34136240).

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

27308920 is a wasteful number, since it uses less digits than its factorization.

27308920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682734 (or 682730 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 27308920 is about 5225.7937196181. The cubic root of 27308920 is about 301.1398120916.

The spelling of 27308920 in words is "twenty-seven million, three hundred eight thousand, nine hundred twenty".