90208250 has 32 divisors (see below), whose sum is σ = 184227264. Its totient is φ = 32802000.

The previous prime is 90208249. The next prime is 90208259. The reversal of 90208250 is 5280209.

It is not an unprimeable number, because it can be changed into a prime (90208259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13652 + ... + 19151.

It is an arithmetic number, because the mean of its divisors is an integer number (5757102).

Almost surely, 2^90208250 is an apocalyptic number.

90208250 is an abundant number, since it is smaller than the sum of its proper divisors (94019014).

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

90208250 is a wasteful number, since it uses less digits than its factorization.

90208250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32831 (or 32821 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 90208250 is about 9497.8023773924. The cubic root of 90208250 is about 448.4858574884.

Adding to 90208250 its reverse (5280209), we get a palindrome (95488459).

The spelling of 90208250 in words is "ninety million, two hundred eight thousand, two hundred fifty".