91868152 has 16 divisors (see below), whose sum is σ = 174434400. Its totient is φ = 45352320.

The previous prime is 91868149. The next prime is 91868171. The reversal of 91868152 is 25186819.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72049 + ... + 73312.

It is an arithmetic number, because the mean of its divisors is an integer number (10902150).

Almost surely, 2^91868152 is an apocalyptic number.

It is an amenable number.

91868152 is a deficient number, since it is larger than the sum of its proper divisors (82566248).

91868152 is a wasteful number, since it uses less digits than its factorization.

91868152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145446 (or 145442 counting only the distinct ones).

The product of its digits is 34560, while the sum is 40.

The square root of 91868152 is about 9584.7875302481. The cubic root of 91868152 is about 451.2199850100.

The spelling of 91868152 in words is "ninety-one million, eight hundred sixty-eight thousand, one hundred fifty-two".