204130536 has 64 divisors (see below), whose sum is σ = 545011200. Its totient is φ = 63571200.

The previous prime is 204130523. The next prime is 204130573. The reversal of 204130536 is 635031402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16846 + ... + 26306.

It is an arithmetic number, because the mean of its divisors is an integer number (8515800).

Almost surely, 2^204130536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204130536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272505600).

204130536 is an abundant number, since it is smaller than the sum of its proper divisors (340880664).

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

204130536 is a wasteful number, since it uses less digits than its factorization.

204130536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9530 (or 9526 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 204130536 is about 14287.4258003323. The cubic root of 204130536 is about 588.8020661578.

Adding to 204130536 its reverse (635031402), we get a palindrome (839161938).

The spelling of 204130536 in words is "two hundred four million, one hundred thirty thousand, five hundred thirty-six".