90308608 has 72 divisors (see below), whose sum is σ = 198180108. Its totient is φ = 40894464.

The previous prime is 90308599. The next prime is 90308627. The reversal of 90308608 is 80680309.

It can be written as a sum of positive squares in 2 ways, for example, as 89718784 + 589824 = 9472^2 + 768^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1703910 + ... + 1703962.

Almost surely, 2^90308608 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 90308608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99090054).

90308608 is an abundant number, since it is smaller than the sum of its proper divisors (107871500).

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

90308608 is an frugal number, since it uses more digits than its factorization.

90308608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 90308608 is about 9503.0841309545. The cubic root of 90308608 is about 448.6521115464.

The spelling of 90308608 in words is "ninety million, three hundred eight thousand, six hundred eight".