204030810 has 48 divisors (see below), whose sum is σ = 535463136. Its totient is φ = 53897184.

The previous prime is 204030773. The next prime is 204030811. The reversal of 204030810 is 18030402.

It is a happy number.

It is a super-2 number, since 2×204030810² = 83257142858512200, which contains 22 as substring.

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

It is a house number.

It is not an unprimeable number, because it can be changed into a prime (204030811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 964 + ... + 20223.

It is an arithmetic number, because the mean of its divisors is an integer number (11155482).

Almost surely, 2^204030810 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204030810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267731568).

204030810 is an abundant number, since it is smaller than the sum of its proper divisors (331432326).

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

204030810 is a wasteful number, since it uses less digits than its factorization.

204030810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21307 (or 21304 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 204030810 is about 14283.9353820997. The cubic root of 204030810 is about 588.7061660199.

The spelling of 204030810 in words is "two hundred four million, thirty thousand, eight hundred ten".