91725912 has 64 divisors (see below), whose sum is σ = 255897600. Its totient is φ = 30443040.

The previous prime is 91725899. The next prime is 91725937. The reversal of 91725912 is 21952719.

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 15 ways as a sum of consecutive naturals, for example, 57753 + ... + 59319.

It is an arithmetic number, because the mean of its divisors is an integer number (3998400).

Almost surely, 2^91725912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91725912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127948800).

91725912 is an abundant number, since it is smaller than the sum of its proper divisors (164171688).

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

91725912 is a wasteful number, since it uses less digits than its factorization.

91725912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853 (or 1843 counting only the distinct ones).

The product of its digits is 11340, while the sum is 36.

The square root of 91725912 is about 9577.3645644300. The cubic root of 91725912 is about 450.9869892003.

The spelling of 91725912 in words is "ninety-one million, seven hundred twenty-five thousand, nine hundred twelve".