27983156 has 24 divisors (see below), whose sum is σ = 53121096. Its totient is φ = 12846080.

The previous prime is 27983149. The next prime is 27983171. The reversal of 27983156 is 65138972.

It can be written as a sum of positive squares in 4 ways, for example, as 839056 + 27144100 = 916^2 + 5210^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2231 + ... + 7806.

It is an arithmetic number, because the mean of its divisors is an integer number (2213379).

Almost surely, 2^27983156 is an apocalyptic number.

It is an amenable number.

27983156 is a deficient number, since it is larger than the sum of its proper divisors (25137940).

27983156 is a wasteful number, since it uses less digits than its factorization.

27983156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10099 (or 10097 counting only the distinct ones).

The product of its digits is 90720, while the sum is 41.

The square root of 27983156 is about 5289.9107742948. The cubic root of 27983156 is about 303.5979941346.

The spelling of 27983156 in words is "twenty-seven million, nine hundred eighty-three thousand, one hundred fifty-six".