27947474 has 16 divisors (see below), whose sum is σ = 44107200. Its totient is φ = 13261584.

The previous prime is 27947471. The next prime is 27947477. The reversal of 27947474 is 47474972.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (27947471) and next prime (27947477).

It is a super-2 number, since 2×27947474² = 1562122605961352, which contains 22 as substring.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 662 + ... + 7505.

It is an arithmetic number, because the mean of its divisors is an integer number (2756700).

Almost surely, 2^27947474 is an apocalyptic number.

27947474 is a deficient number, since it is larger than the sum of its proper divisors (16159726).

27947474 is a wasteful number, since it uses less digits than its factorization.

27947474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8257.

The product of its digits is 395136, while the sum is 44.

The square root of 27947474 is about 5286.5370517949. The cubic root of 27947474 is about 303.4688975290.

The spelling of 27947474 in words is "twenty-seven million, nine hundred forty-seven thousand, four hundred seventy-four".