27923820 has 48 divisors (see below), whose sum is σ = 78475488. Its totient is φ = 7418880.

The previous prime is 27923783. The next prime is 27923827. The reversal of 27923820 is 2832972.

It is not an unprimeable number, because it can be changed into a prime (27923827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19530 + ... + 20910.

It is an arithmetic number, because the mean of its divisors is an integer number (1634906).

Almost surely, 2^27923820 is an apocalyptic number.

27923820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27923820 is an abundant number, since it is smaller than the sum of its proper divisors (50551668).

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

27923820 is a wasteful number, since it uses less digits than its factorization.

27923820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730 (or 1728 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 27923820 is about 5284.2993859167. The cubic root of 27923820 is about 303.3832573573.

The spelling of 27923820 in words is "twenty-seven million, nine hundred twenty-three thousand, eight hundred twenty".