91321074 has 32 divisors (see below), whose sum is σ = 218547840. Its totient is φ = 28098576.

The previous prime is 91321039. The next prime is 91321081. The reversal of 91321074 is 47012319.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64342 + ... + 65745.

It is an arithmetic number, because the mean of its divisors is an integer number (6829620).

Almost surely, 2^91321074 is an apocalyptic number.

91321074 is an abundant number, since it is smaller than the sum of its proper divisors (127226766).

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

91321074 is a wasteful number, since it uses less digits than its factorization.

91321074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130111 (or 130105 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 91321074 is about 9556.2060463345. The cubic root of 91321074 is about 450.3225243404.

The spelling of 91321074 in words is "ninety-one million, three hundred twenty-one thousand, seventy-four".