204781080 has 64 divisors (see below), whose sum is σ = 702109440. Its totient is φ = 46806912.

The previous prime is 204781067. The next prime is 204781091. The reversal of 204781080 is 80187402.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 121054 + ... + 122733.

It is an arithmetic number, because the mean of its divisors is an integer number (10970460).

Almost surely, 2^204781080 is an apocalyptic number.

204781080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204781080 is an abundant number, since it is smaller than the sum of its proper divisors (497328360).

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

204781080 is a wasteful number, since it uses less digits than its factorization.

204781080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243808 (or 243804 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 204781080 is about 14310.1740031350. The cubic root of 204781080 is about 589.4268876933.

The spelling of 204781080 in words is "two hundred four million, seven hundred eighty-one thousand, eighty".