27804420 has 72 divisors (see below), whose sum is σ = 96393024. Its totient is φ = 6355008.

The previous prime is 27804409. The next prime is 27804431. The reversal of 27804420 is 2440872.

It is an interprime number because it is at equal distance from previous prime (27804409) and next prime (27804431).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9774 + ... + 12293.

It is an arithmetic number, because the mean of its divisors is an integer number (1338792).

Almost surely, 2^27804420 is an apocalyptic number.

27804420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27804420 is an abundant number, since it is smaller than the sum of its proper divisors (68588604).

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

27804420 is a wasteful number, since it uses less digits than its factorization.

27804420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22089 (or 22084 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 27804420 is about 5272.9896643176. The cubic root of 27804420 is about 302.9502254611.

It can be divided in two parts, 27804 and 420, that added together give a square (28224 = 168²).

The spelling of 27804420 in words is "twenty-seven million, eight hundred four thousand, four hundred twenty".