204031520 has 96 divisors (see below), whose sum is σ = 601001856. Its totient is φ = 63590400.

The previous prime is 204031507. The next prime is 204031523. The reversal of 204031520 is 25130402.

It is a super-2 number, since 2×204031520² = 83257722307020800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204031523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4040 + ... + 20600.

It is an arithmetic number, because the mean of its divisors is an integer number (6260436).

Almost surely, 2^204031520 is an apocalyptic number.

204031520 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 204031520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300500928).

204031520 is an abundant number, since it is smaller than the sum of its proper divisors (396970336).

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

204031520 is a wasteful number, since it uses less digits than its factorization.

204031520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16594 (or 16586 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 204031520 is about 14283.9602351729. The cubic root of 204031520 is about 588.7068488921.

Adding to 204031520 its reverse (25130402), we get a palindrome (229161922).

The spelling of 204031520 in words is "two hundred four million, thirty-one thousand, five hundred twenty".