203492090 has 24 divisors (see below), whose sum is σ = 386585460. Its totient is φ = 77111424.

The previous prime is 203492087. The next prime is 203492117. The reversal of 203492090 is 90294302.

It can be written as a sum of positive squares in 2 ways, for example, as 181467841 + 22024249 = 13471^2 + 4693^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24575 + ... + 31794.

Almost surely, 2^203492090 is an apocalyptic number.

203492090 is a deficient number, since it is larger than the sum of its proper divisors (183093370).

203492090 is a wasteful number, since it uses less digits than its factorization.

203492090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56414 (or 56395 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 203492090 is about 14265.0653696364. The cubic root of 203492090 is about 588.1875722403.

The spelling of 203492090 in words is "two hundred three million, four hundred ninety-two thousand, ninety".