91894152 has 128 divisors (see below), whose sum is σ = 272793600. Its totient is φ = 25256448.

The previous prime is 91894123. The next prime is 91894157. The reversal of 91894152 is 25149819.

It is a self number, because there is not a number n which added to its sum of digits gives 91894152.

It is not an unprimeable number, because it can be changed into a prime (91894157) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 723513 + ... + 723639.

It is an arithmetic number, because the mean of its divisors is an integer number (2131200).

Almost surely, 2^91894152 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 91894152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136396800).

91894152 is an abundant number, since it is smaller than the sum of its proper divisors (180899448).

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

91894152 is a wasteful number, since it uses less digits than its factorization.

91894152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275 (or 271 counting only the distinct ones).

The product of its digits is 25920, while the sum is 39.

The square root of 91894152 is about 9586.1437502262. The cubic root of 91894152 is about 451.2625482298.

The spelling of 91894152 in words is "ninety-one million, eight hundred ninety-four thousand, one hundred fifty-two".