204097280 has 72 divisors (see below), whose sum is σ = 491393952. Its totient is φ = 81219584.

The previous prime is 204097279. The next prime is 204097301. The reversal of 204097280 is 82790402.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405509 + ... + 406011.

It is an arithmetic number, because the mean of its divisors is an integer number (6824916).

Almost surely, 2^204097280 is an apocalyptic number.

204097280 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 204097280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245696976).

204097280 is an abundant number, since it is smaller than the sum of its proper divisors (287296672).

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

204097280 is an equidigital number, since it uses as much as digits as its factorization.

204097280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841 (or 827 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 204097280 is about 14286.2619323601. The cubic root of 204097280 is about 588.7700894541.

The spelling of 204097280 in words is "two hundred four million, ninety-seven thousand, two hundred eighty".