90398240 has 24 divisors (see below), whose sum is σ = 213566220. Its totient is φ = 36159232.

The previous prime is 90398239. The next prime is 90398251. The reversal of 90398240 is 4289309.

It can be written as a sum of positive squares in 2 ways, for example, as 72522256 + 17875984 = 8516^2 + 4228^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 90398240.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282335 + ... + 282654.

Almost surely, 2^90398240 is an apocalyptic number.

It is an amenable number.

90398240 is an abundant number, since it is smaller than the sum of its proper divisors (123167980).

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

90398240 is a wasteful number, since it uses less digits than its factorization.

90398240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565004 (or 564996 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 90398240 is about 9507.7989040577. The cubic root of 90398240 is about 448.8004927110.

The spelling of 90398240 in words is "ninety million, three hundred ninety-eight thousand, two hundred forty".