90773312 has 56 divisors (see below), whose sum is σ = 209799936. Its totient is φ = 38158848.

The previous prime is 90773311. The next prime is 90773327. The reversal of 90773312 is 21337709.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90773311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21833 + ... + 25655.

Almost surely, 2^90773312 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 90773312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104899968).

90773312 is an abundant number, since it is smaller than the sum of its proper divisors (119026624).

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

90773312 is a wasteful number, since it uses less digits than its factorization.

90773312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3895 (or 3885 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 32.

The square root of 90773312 is about 9527.5029257408. The cubic root of 90773312 is about 449.4203433618.

The spelling of 90773312 in words is "ninety million, seven hundred seventy-three thousand, three hundred twelve".