27909968 has 20 divisors (see below), whose sum is σ = 54178080. Its totient is φ = 13928544.

The previous prime is 27909953. The next prime is 27909979. The reversal of 27909968 is 86990972.

It is a super-2 number, since 2×27909968² = 1557932627522048, 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, 9221 + ... + 11867.

It is an arithmetic number, because the mean of its divisors is an integer number (2708904).

Almost surely, 2^27909968 is an apocalyptic number.

It is an amenable number.

27909968 is a deficient number, since it is larger than the sum of its proper divisors (26268112).

27909968 is a wasteful number, since it uses less digits than its factorization.

27909968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3314 (or 3308 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 27909968 is about 5282.9885481610. The cubic root of 27909968 is about 303.3330832291. Note that the first 3 decimals are identical.

The spelling of 27909968 in words is "twenty-seven million, nine hundred nine thousand, nine hundred sixty-eight".