27947472 has 40 divisors (see below), whose sum is σ = 82512576. Its totient is φ = 7984896.

The previous prime is 27947471. The next prime is 27947477. The reversal of 27947472 is 27474972.

It is a super-2 number, since 2×27947472² = 1562122382381568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27947471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41253 + ... + 41924.

Almost surely, 2^27947472 is an apocalyptic number.

It is an amenable number.

27947472 is an abundant number, since it is smaller than the sum of its proper divisors (54565104).

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

27947472 is a wasteful number, since it uses less digits than its factorization.

27947472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83195 (or 83189 counting only the distinct ones).

The product of its digits is 197568, while the sum is 42.

The square root of 27947472 is about 5286.5368626351. The cubic root of 27947472 is about 303.4688902900.

The spelling of 27947472 in words is "twenty-seven million, nine hundred forty-seven thousand, four hundred seventy-two".