91672374 has 16 divisors (see below), whose sum is σ = 184277808. Its totient is φ = 30401952.

The previous prime is 91672367. The next prime is 91672409. The reversal of 91672374 is 47327619.

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 7 ways as a sum of consecutive naturals, for example, 37597 + ... + 39960.

It is an arithmetic number, because the mean of its divisors is an integer number (11517363).

Almost surely, 2^91672374 is an apocalyptic number.

91672374 is an abundant number, since it is smaller than the sum of its proper divisors (92605434).

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

91672374 is a wasteful number, since it uses less digits than its factorization.

91672374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77759.

The product of its digits is 63504, while the sum is 39.

The square root of 91672374 is about 9574.5691286867. The cubic root of 91672374 is about 450.8992290461.

The spelling of 91672374 in words is "ninety-one million, six hundred seventy-two thousand, three hundred seventy-four".