90910332 has 72 divisors (see below), whose sum is σ = 238270032. Its totient is φ = 29203200.

The previous prime is 90910301. The next prime is 90910333. The reversal of 90910332 is 23301909.

It is a junction number, because it is equal to n+sod(n) for n = 90910296 and 90910305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90910333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 174232 + ... + 174752.

It is an arithmetic number, because the mean of its divisors is an integer number (3309306).

Almost surely, 2^90910332 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 90910332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119135016).

90910332 is an abundant number, since it is smaller than the sum of its proper divisors (147359700).

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

90910332 is a wasteful number, since it uses less digits than its factorization.

90910332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699 (or 694 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 90910332 is about 9534.6909755901. The cubic root of 90910332 is about 449.6463591947.

The spelling of 90910332 in words is "ninety million, nine hundred ten thousand, three hundred thirty-two".