27994972 has 12 divisors (see below), whose sum is σ = 49044520. Its totient is φ = 13982256.

The previous prime is 27994957. The next prime is 27994973. The reversal of 27994972 is 27949972.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27994973) 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, 1003 + ... + 7549.

Almost surely, 2^27994972 is an apocalyptic number.

It is an amenable number.

27994972 is a deficient number, since it is larger than the sum of its proper divisors (21049548).

27994972 is a wasteful number, since it uses less digits than its factorization.

27994972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7620 (or 7618 counting only the distinct ones).

The product of its digits is 571536, while the sum is 49.

The square root of 27994972 is about 5291.0274994560. The cubic root of 27994972 is about 303.6407199455.

The spelling of 27994972 in words is "twenty-seven million, nine hundred ninety-four thousand, nine hundred seventy-two".