27974151 has 6 divisors (see below), whose sum is σ = 40407120. Its totient is φ = 18649428.

The previous prime is 27974143. The next prime is 27974171. The reversal of 27974151 is 15147972.

It is a happy number.

It is not a de Polignac number, because 27974151 - 2³ = 27974143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27974101) 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 5 ways as a sum of consecutive naturals, for example, 1554111 + ... + 1554128.

It is an arithmetic number, because the mean of its divisors is an integer number (6734520).

Almost surely, 2^27974151 is an apocalyptic number.

27974151 is a deficient number, since it is larger than the sum of its proper divisors (12432969).

27974151 is a wasteful number, since it uses less digits than its factorization.

27974151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3108245 (or 3108242 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 27974151 is about 5289.0595572370. The cubic root of 27974151 is about 303.5654246221.

The spelling of 27974151 in words is "twenty-seven million, nine hundred seventy-four thousand, one hundred fifty-one".