91923216 has 360 divisors, whose sum is σ = 338415840. Its totient is φ = 21288960.

The previous prime is 91923187. The next prime is 91923229. The reversal of 91923216 is 61232919.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4838055 + ... + 4838073.

It is an arithmetic number, because the mean of its divisors is an integer number (940044).

Almost surely, 2^91923216 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 91923216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169207920).

91923216 is an abundant number, since it is smaller than the sum of its proper divisors (246492624).

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

91923216 is a wasteful number, since it uses less digits than its factorization.

91923216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 59 counting only the distinct ones).

The product of its digits is 5832, while the sum is 33.

The square root of 91923216 is about 9587.6595684244. The cubic root of 91923216 is about 451.3101178591.

The spelling of 91923216 in words is "ninety-one million, nine hundred twenty-three thousand, two hundred sixteen".