90195500 has 24 divisors (see below), whose sum is σ = 196988064. Its totient is φ = 36078000.

The previous prime is 90195487. The next prime is 90195509. The reversal of 90195500 is 559109.

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 not an unprimeable number, because it can be changed into a prime (90195509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89696 + ... + 90695.

It is an arithmetic number, because the mean of its divisors is an integer number (8207836).

Almost surely, 2^90195500 is an apocalyptic number.

It is an amenable number.

90195500 is an abundant number, since it is smaller than the sum of its proper divisors (106792564).

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

90195500 is a wasteful number, since it uses less digits than its factorization.

90195500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180410 (or 180398 counting only the distinct ones).

The product of its (nonzero) digits is 2025, while the sum is 29.

The square root of 90195500 is about 9497.1311457724. The cubic root of 90195500 is about 448.4647268855.

The spelling of 90195500 in words is "ninety million, one hundred ninety-five thousand, five hundred".