91283712 has 144 divisors (see below), whose sum is σ = 269219328. Its totient is φ = 27279360.

The previous prime is 91283707. The next prime is 91283719. The reversal of 91283712 is 21738219.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91283719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 409233 + ... + 409455.

Almost surely, 2^91283712 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 91283712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134609664).

91283712 is an abundant number, since it is smaller than the sum of its proper divisors (177935616).

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

91283712 is a wasteful number, since it uses less digits than its factorization.

91283712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296 (or 282 counting only the distinct ones).

The product of its digits is 6048, while the sum is 33.

The square root of 91283712 is about 9554.2509910511. The cubic root of 91283712 is about 450.2611027924.

The spelling of 91283712 in words is "ninety-one million, two hundred eighty-three thousand, seven hundred twelve".