203490404 has 12 divisors (see below), whose sum is σ = 383501244. Its totient is φ = 93918624.

The previous prime is 203490379. The next prime is 203490433. The reversal of 203490404 is 404094302.

It can be written as a sum of positive squares in 2 ways, for example, as 82446400 + 121044004 = 9080^2 + 11002^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1956587 + ... + 1956690.

It is an arithmetic number, because the mean of its divisors is an integer number (31958437).

Almost surely, 2^203490404 is an apocalyptic number.

It is an amenable number.

203490404 is a deficient number, since it is larger than the sum of its proper divisors (180010840).

203490404 is a wasteful number, since it uses less digits than its factorization.

203490404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3913294 (or 3913292 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 203490404 is about 14265.0062740961. The cubic root of 203490404 is about 588.1859477923.

The spelling of 203490404 in words is "two hundred three million, four hundred ninety thousand, four hundred four".