91974152 has 16 divisors (see below), whose sum is σ = 176658300. Its totient is φ = 44865280.

The previous prime is 91974149. The next prime is 91974191. The reversal of 91974152 is 25147919.

It can be written as a sum of positive squares in 2 ways, for example, as 62315236 + 29658916 = 7894^2 + 5446^2 .

It is a super-2 number, since 2×91974152² = 16918489272238208, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 139877 + ... + 140532.

Almost surely, 2^91974152 is an apocalyptic number.

It is an amenable number.

91974152 is a deficient number, since it is larger than the sum of its proper divisors (84684148).

91974152 is a wasteful number, since it uses less digits than its factorization.

91974152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280456 (or 280452 counting only the distinct ones).

The product of its digits is 22680, while the sum is 38.

The square root of 91974152 is about 9590.3155318269. The cubic root of 91974152 is about 451.3934616486.

The spelling of 91974152 in words is "ninety-one million, nine hundred seventy-four thousand, one hundred fifty-two".