204420456 has 32 divisors (see below), whose sum is σ = 567835200. Its totient is φ = 68140080.

The previous prime is 204420421. The next prime is 204420467. The reversal of 204420456 is 654024402.

204420456 is a `hidden beast` number, since 204 + 4 + 2 + 0 + 456 = 666.

204420456 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 472980 + ... + 473411.

It is an arithmetic number, because the mean of its divisors is an integer number (17744850).

Almost surely, 2^204420456 is an apocalyptic number.

It is an amenable number.

204420456 is an abundant number, since it is smaller than the sum of its proper divisors (363414744).

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

204420456 is a wasteful number, since it uses less digits than its factorization.

204420456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946406 (or 946396 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 204420456 is about 14297.5681848348. The cubic root of 204420456 is about 589.0806864731.

Adding to 204420456 its reverse (654024402), we get a palindrome (858444858).

It can be divided in two parts, 2044 and 20456, that added together give a square (22500 = 150²).

The spelling of 204420456 in words is "two hundred four million, four hundred twenty thousand, four hundred fifty-six".