91457936 has 40 divisors (see below), whose sum is σ = 190892544. Its totient is φ = 42324480.

The previous prime is 91457917. The next prime is 91457957. The reversal of 91457936 is 63975419.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7400 + ... + 15416.

Almost surely, 2^91457936 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 91457936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95446272).

91457936 is an abundant number, since it is smaller than the sum of its proper divisors (99434608).

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

91457936 is a wasteful number, since it uses less digits than its factorization.

91457936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8079 (or 8073 counting only the distinct ones).

The product of its digits is 204120, while the sum is 44.

The square root of 91457936 is about 9563.3642615975. The cubic root of 91457936 is about 450.5473767034.

The spelling of 91457936 in words is "ninety-one million, four hundred fifty-seven thousand, nine hundred thirty-six".