204547980 has 96 divisors (see below), whose sum is σ = 704922624. Its totient is φ = 43156224.

The previous prime is 204547979. The next prime is 204547997. The reversal of 204547980 is 89745402.

It is a super-2 number, since 2×204547980² = 83679752244160800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13272 + ... + 24191.

It is an arithmetic number, because the mean of its divisors is an integer number (7342944).

Almost surely, 2^204547980 is an apocalyptic number.

204547980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204547980 is an abundant number, since it is smaller than the sum of its proper divisors (500374644).

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

204547980 is a wasteful number, since it uses less digits than its factorization.

204547980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37495 (or 37493 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 204547980 is about 14302.0271290471. The cubic root of 204547980 is about 589.2031567829.

The spelling of 204547980 in words is "two hundred four million, five hundred forty-seven thousand, nine hundred eighty".