27204540 has 96 divisors (see below), whose sum is σ = 84962304. Its totient is φ = 6447360.

The previous prime is 27204533. The next prime is 27204553. The reversal of 27204540 is 4540272.

It is a super-2 number, since 2×27204540² = 1480173993223200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27204540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30582 + ... + 31458.

It is an arithmetic number, because the mean of its divisors is an integer number (885024).

Almost surely, 2^27204540 is an apocalyptic number.

27204540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27204540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42481152).

27204540 is an abundant number, since it is smaller than the sum of its proper divisors (57757764).

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

27204540 is a wasteful number, since it uses less digits than its factorization.

27204540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947 (or 945 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 27204540 is about 5215.7971586326. The cubic root of 27204540 is about 300.7556505981.

It can be divided in two parts, 2720 and 4540, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 27204540 in words is "twenty-seven million, two hundred four thousand, five hundred forty".