91641324 has 12 divisors (see below), whose sum is σ = 213829784. Its totient is φ = 30547104.

The previous prime is 91641323. The next prime is 91641331. The reversal of 91641324 is 42314619.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 91641291 and 91641300.

It is not an unprimeable number, because it can be changed into a prime (91641323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3818377 + ... + 3818400.

Almost surely, 2^91641324 is an apocalyptic number.

It is an amenable number.

91641324 is an abundant number, since it is smaller than the sum of its proper divisors (122188460).

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

91641324 is a wasteful number, since it uses less digits than its factorization.

91641324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7636784 (or 7636782 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 91641324 is about 9572.9475084741. The cubic root of 91641324 is about 450.8483158450.

The spelling of 91641324 in words is "ninety-one million, six hundred forty-one thousand, three hundred twenty-four".