91648312 has 16 divisors (see below), whose sum is σ = 196389360. Its totient is φ = 39277824.

The previous prime is 91648303. The next prime is 91648327. The reversal of 91648312 is 21384619.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 818233 + ... + 818344.

It is an arithmetic number, because the mean of its divisors is an integer number (12274335).

Almost surely, 2^91648312 is an apocalyptic number.

It is an amenable number.

91648312 is an abundant number, since it is smaller than the sum of its proper divisors (104741048).

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

91648312 is a wasteful number, since it uses less digits than its factorization.

91648312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636590 (or 1636586 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 91648312 is about 9573.3124883710. The cubic root of 91648312 is about 450.8597751875.

The spelling of 91648312 in words is "ninety-one million, six hundred forty-eight thousand, three hundred twelve".