91380672 has 42 divisors (see below), whose sum is σ = 261927848. Its totient is φ = 30460032.

The previous prime is 91380649. The next prime is 91380701. The reversal of 91380672 is 27608319.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 78748 + ... + 79899.

Almost surely, 2^91380672 is an apocalyptic number.

It is an amenable number.

91380672 is an abundant number, since it is smaller than the sum of its proper divisors (170547176).

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

91380672 is a wasteful number, since it uses less digits than its factorization.

91380672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158665 (or 158652 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 91380672 is about 9559.3238254596. The cubic root of 91380672 is about 450.4204662661.

91380672 divided by its sum of digits (36) gives a palindrome (2538352).

The spelling of 91380672 in words is "ninety-one million, three hundred eighty thousand, six hundred seventy-two".