91734972 has 48 divisors (see below), whose sum is σ = 248650752. Its totient is φ = 25778880.

The previous prime is 91734961. The next prime is 91734989. The reversal of 91734972 is 27943719.

It is a super-3 number, since 3×91734972³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 15 ways as a sum of consecutive naturals, for example, 3828 + ... + 14075.

It is an arithmetic number, because the mean of its divisors is an integer number (5180224).

Almost surely, 2^91734972 is an apocalyptic number.

It is an amenable number.

91734972 is an abundant number, since it is smaller than the sum of its proper divisors (156915780).

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

91734972 is a wasteful number, since it uses less digits than its factorization.

91734972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17978 (or 17976 counting only the distinct ones).

The product of its digits is 95256, while the sum is 42.

The square root of 91734972 is about 9577.8375429948. The cubic root of 91734972 is about 451.0018370861.

The spelling of 91734972 in words is "ninety-one million, seven hundred thirty-four thousand, nine hundred seventy-two".