90203258 has 12 divisors (see below), whose sum is σ = 143733102. Its totient is φ = 42448320.

The previous prime is 90203249. The next prime is 90203287. The reversal of 90203258 is 85230209.

It can be written as a sum of positive squares in 3 ways, for example, as 83302129 + 6901129 = 9127^2 + 2627^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 90203258.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77453 + ... + 78608.

Almost surely, 2^90203258 is an apocalyptic number.

90203258 is a deficient number, since it is larger than the sum of its proper divisors (53529844).

90203258 is a wasteful number, since it uses less digits than its factorization.

90203258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156097 (or 156080 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 90203258 is about 9497.5395761218. The cubic root of 90203258 is about 448.4775844730.

The spelling of 90203258 in words is "ninety million, two hundred three thousand, two hundred fifty-eight".