27775272 has 64 divisors (see below), whose sum is σ = 82108800. Its totient is φ = 7660800.

The previous prime is 27775249. The next prime is 27775337. The reversal of 27775272 is 27257772.

It is a self number, because there is not a number n which added to its sum of digits gives 27775272.

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, 2022 + ... + 7722.

It is an arithmetic number, because the mean of its divisors is an integer number (1282950).

Almost surely, 2^27775272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27775272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41054400).

27775272 is an abundant number, since it is smaller than the sum of its proper divisors (54333528).

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

27775272 is a wasteful number, since it uses less digits than its factorization.

27775272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5746 (or 5742 counting only the distinct ones).

The product of its digits is 96040, while the sum is 39.

The square root of 27775272 is about 5270.2250426334. The cubic root of 27775272 is about 302.8443252640.

The spelling of 27775272 in words is "twenty-seven million, seven hundred seventy-five thousand, two hundred seventy-two".