204402403400 has 48 divisors (see below), whose sum is σ = 511792178100. Its totient is φ = 75471655680.

The previous prime is 204402403367. The next prime is 204402403421. The reversal of 204402403400 is 4304204402.

It can be written as a sum of positive squares in 6 ways, for example, as 11113798084 + 193288605316 = 105422^2 + 439646^2 .

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, 39305555 + ... + 39310754.

Almost surely, 2^204402403400 is an apocalyptic number.

204402403400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204402403400 is an abundant number, since it is smaller than the sum of its proper divisors (307389774700).

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

204402403400 is a wasteful number, since it uses less digits than its factorization.

204402403400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78616338 (or 78616329 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

Adding to 204402403400 its reverse (4304204402), we get a palindrome (208706607802).

The spelling of 204402403400 in words is "two hundred four billion, four hundred two million, four hundred three thousand, four hundred".