204009402276 has 135 divisors (see below), whose sum is σ = 558028390843. Its totient is φ = 64986855120.

The previous prime is 204009402151. The next prime is 204009402277. The reversal of 204009402276 is 672204900402.

The square root of 204009402276 is 451674.

It is a perfect power (a square), and thus also a powerful number.

204009402276 is a `hidden beast` number, since 20 + 400 + 9 + 4 + 0 + 227 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204009402276.

It is not an unprimeable number, because it can be changed into a prime (204009402277) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 186992491 + ... + 186993581.

Almost surely, 2^204009402276 is an apocalyptic number.

204009402276 is the 451674-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204009402276

204009402276 is an abundant number, since it is smaller than the sum of its proper divisors (354018988567).

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

204009402276 is an equidigital number, since it uses as much as digits as its factorization.

204009402276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244 (or 1119 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

Multiplying 204009402276 by its sum of digits (36), we get a square (7344338481936 = 2710044²).

204009402276 divided by its sum of digits (36) gives a square (5666927841 = 75279²).

The spelling of 204009402276 in words is "two hundred four billion, nine million, four hundred two thousand, two hundred seventy-six".