90402338 has 32 divisors (see below), whose sum is σ = 154344960. Its totient is φ = 39412800.

The previous prime is 90402329. The next prime is 90402349. The reversal of 90402338 is 83320409.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a self number, because there is not a number n which added to its sum of digits gives 90402338.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34163 + ... + 36713.

It is an arithmetic number, because the mean of its divisors is an integer number (4823280).

Almost surely, 2^90402338 is an apocalyptic number.

90402338 is a deficient number, since it is larger than the sum of its proper divisors (63942622).

90402338 is a wasteful number, since it uses less digits than its factorization.

90402338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2642.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 90402338 is about 9508.0144089079. The cubic root of 90402338 is about 448.8072743940.

The spelling of 90402338 in words is "ninety million, four hundred two thousand, three hundred thirty-eight".