27872244 has 18 divisors (see below), whose sum is σ = 70454930. Its totient is φ = 9290736.

The previous prime is 27872237. The next prime is 27872261. The reversal of 27872244 is 44227872.

It can be written as a sum of positive squares in only one way, i.e., 27436644 + 435600 = 5238^2 + 660^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 774229 = 27872244 / (2 + 7 + 8 + 7 + 2 + 2 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 27872199 and 27872208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 387079 + ... + 387150.

Almost surely, 2^27872244 is an apocalyptic number.

It is an amenable number.

27872244 is an abundant number, since it is smaller than the sum of its proper divisors (42582686).

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

27872244 is a wasteful number, since it uses less digits than its factorization.

27872244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774239 (or 774234 counting only the distinct ones).

The product of its digits is 50176, while the sum is 36.

The square root of 27872244 is about 5279.4170132696. The cubic root of 27872244 is about 303.1963567299.

The spelling of 27872244 in words is "twenty-seven million, eight hundred seventy-two thousand, two hundred forty-four".