27724956 has 48 divisors (see below), whose sum is σ = 74296320. Its totient is φ = 7882560.

The previous prime is 27724919. The next prime is 27724967. The reversal of 27724956 is 65942772.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19386 + ... + 20766.

It is an arithmetic number, because the mean of its divisors is an integer number (1547840).

Almost surely, 2^27724956 is an apocalyptic number.

It is an amenable number.

27724956 is an abundant number, since it is smaller than the sum of its proper divisors (46571364).

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

27724956 is a wasteful number, since it uses less digits than its factorization.

27724956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634 (or 1632 counting only the distinct ones).

The product of its digits is 211680, while the sum is 42.

The square root of 27724956 is about 5265.4492685810. The cubic root of 27724956 is about 302.6613432492.

It can be divided in two parts, 27724 and 956, that added together give a triangular number (28680 = T₂₃₉).

The spelling of 27724956 in words is "twenty-seven million, seven hundred twenty-four thousand, nine hundred fifty-six".