91926720 has 168 divisors, whose sum is σ = 322143120. Its totient is φ = 24053760.

The previous prime is 91926683. The next prime is 91926727. The reversal of 91926720 is 2762919.

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

It is not an unprimeable number, because it can be changed into a prime (91926727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 169650 + ... + 170190.

Almost surely, 2^91926720 is an apocalyptic number.

91926720 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91926720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161071560).

91926720 is an abundant number, since it is smaller than the sum of its proper divisors (230216400).

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

91926720 is a wasteful number, since it uses less digits than its factorization.

91926720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623 (or 610 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 91926720 is about 9587.8423015817. The cubic root of 91926720 is about 451.3158522486.

The spelling of 91926720 in words is "ninety-one million, nine hundred twenty-six thousand, seven hundred twenty".