27937972 has 12 divisors (see below), whose sum is σ = 49013860. Its totient is φ = 13934016.

The previous prime is 27937967. The next prime is 27937979. The reversal of 27937972 is 27973972.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19678096 + 8259876 = 4436^2 + 2874^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27937979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6903 + ... + 10174.

Almost surely, 2^27937972 is an apocalyptic number.

It is an amenable number.

27937972 is a deficient number, since it is larger than the sum of its proper divisors (21075888).

27937972 is a wasteful number, since it uses less digits than its factorization.

27937972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17490 (or 17488 counting only the distinct ones).

The product of its digits is 333396, while the sum is 46.

The square root of 27937972 is about 5285.6382774458. The cubic root of 27937972 is about 303.4345009997.

The spelling of 27937972 in words is "twenty-seven million, nine hundred thirty-seven thousand, nine hundred seventy-two".