90872808 has 64 divisors (see below), whose sum is σ = 249903360. Its totient is φ = 27361536.

The previous prime is 90872791. The next prime is 90872813. The reversal of 90872808 is 80827809.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 90872808.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11566 + ... + 17762.

It is an arithmetic number, because the mean of its divisors is an integer number (3904740).

Almost surely, 2^90872808 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 90872808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124951680).

90872808 is an abundant number, since it is smaller than the sum of its proper divisors (159030552).

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

90872808 is a wasteful number, since it uses less digits than its factorization.

90872808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6266 (or 6262 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 90872808 is about 9532.7230107667. The cubic root of 90872808 is about 449.5844855823.

The spelling of 90872808 in words is "ninety million, eight hundred seventy-two thousand, eight hundred eight".