90263808 has 108 divisors (see below), whose sum is σ = 270077808. Its totient is φ = 30067200.

The previous prime is 90263783. The next prime is 90263821. The reversal of 90263808 is 80836209.

It is a tau number, because it is divible by the number of its divisors (108).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61483 + ... + 62933.

Almost surely, 2^90263808 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 90263808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135038904).

90263808 is an abundant number, since it is smaller than the sum of its proper divisors (179814000).

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

90263808 is an equidigital number, since it uses as much as digits as its factorization.

90263808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482 (or 1456 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 90263808 is about 9500.7267090471. The cubic root of 90263808 is about 448.5779106494.

The spelling of 90263808 in words is "ninety million, two hundred sixty-three thousand, eight hundred eight".