204731226 has 40 divisors (see below), whose sum is σ = 524288160. Its totient is φ = 58494312.

The previous prime is 204731183. The next prime is 204731227. The reversal of 204731226 is 622137402.

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

It is a self number, because there is not a number n which added to its sum of digits gives 204731226.

It is not an unprimeable number, because it can be changed into a prime (204731227) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 89136 + ... + 91403.

It is an arithmetic number, because the mean of its divisors is an integer number (13107204).

Almost surely, 2^204731226 is an apocalyptic number.

204731226 is an abundant number, since it is smaller than the sum of its proper divisors (319556934).

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

204731226 is a wasteful number, since it uses less digits than its factorization.

204731226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180560 (or 180551 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 204731226 is about 14308.4319895648. The cubic root of 204731226 is about 589.3790517750.

Adding to 204731226 its reverse (622137402), we get a palindrome (826868628).

The spelling of 204731226 in words is "two hundred four million, seven hundred thirty-one thousand, two hundred twenty-six".