204103530 has 128 divisors (see below), whose sum is σ = 587865600. Its totient is φ = 50199552.

The previous prime is 204103519. The next prime is 204103553. The reversal of 204103530 is 35301402.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 242851 + ... + 243689.

It is an arithmetic number, because the mean of its divisors is an integer number (4592700).

Almost surely, 2^204103530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204103530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293932800).

204103530 is an abundant number, since it is smaller than the sum of its proper divisors (383762070).

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

204103530 is a wasteful number, since it uses less digits than its factorization.

204103530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925 (or 919 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 204103530 is about 14286.4806722999. The cubic root of 204103530 is about 588.7760992933.

Adding to 204103530 its reverse (35301402), we get a palindrome (239404932).

The spelling of 204103530 in words is "two hundred four million, one hundred three thousand, five hundred thirty".