204045100 has 72 divisors (see below), whose sum is σ = 522411008. Its totient is φ = 67694400.

The previous prime is 204045097. The next prime is 204045113. The reversal of 204045100 is 1540402.

204045100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16999 + ... + 26401.

Almost surely, 2^204045100 is an apocalyptic number.

204045100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204045100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261205504).

204045100 is an abundant number, since it is smaller than the sum of its proper divisors (318365908).

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

204045100 is a wasteful number, since it uses less digits than its factorization.

204045100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9455 (or 9448 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 204045100 is about 14284.4355856296. The cubic root of 204045100 is about 588.7199097199.

Adding to 204045100 its reverse (1540402), we get a palindrome (205585502).

The spelling of 204045100 in words is "two hundred four million, forty-five thousand, one hundred".