204452120 has 16 divisors (see below), whose sum is σ = 460017360. Its totient is φ = 81780832.

The previous prime is 204452119. The next prime is 204452153. The reversal of 204452120 is 21254402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 204452092 and 204452101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2555612 + ... + 2555691.

It is an arithmetic number, because the mean of its divisors is an integer number (28751085).

Almost surely, 2^204452120 is an apocalyptic number.

204452120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204452120 is an abundant number, since it is smaller than the sum of its proper divisors (255565240).

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

204452120 is a wasteful number, since it uses less digits than its factorization.

204452120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5111314 (or 5111310 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 204452120 is about 14298.6754631329. The cubic root of 204452120 is about 589.1111004023. Note that the first 4 decimals are identical.

The spelling of 204452120 in words is "two hundred four million, four hundred fifty-two thousand, one hundred twenty".