91325268 has 18 divisors (see below), whose sum is σ = 230850074. Its totient is φ = 30441744.

The previous prime is 91325243. The next prime is 91325347. The reversal of 91325268 is 86252319.

It can be written as a sum of positive squares in only one way, i.e., 50722884 + 40602384 = 7122^2 + 6372^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2536813 = 91325268 / (9 + 1 + 3 + 2 + 5 + 2 + 6 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1268371 + ... + 1268442.

Almost surely, 2^91325268 is an apocalyptic number.

It is an amenable number.

91325268 is an abundant number, since it is smaller than the sum of its proper divisors (139524806).

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

91325268 is a wasteful number, since it uses less digits than its factorization.

91325268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2536823 (or 2536818 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 91325268 is about 9556.4254823653. The cubic root of 91325268 is about 450.3294180532.

It can be divided in two parts, 9132 and 5268, that added together give a square (14400 = 120²).

The spelling of 91325268 in words is "ninety-one million, three hundred twenty-five thousand, two hundred sixty-eight".