204876945 has 192 divisors, whose sum is σ = 484323840. Its totient is φ = 80621568.

The previous prime is 204876899. The next prime is 204876953. The reversal of 204876945 is 549678402.

It is a happy number.

It is not a de Polignac number, because 204876945 - 2¹⁰ = 204875921 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 204876945.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1879551 + ... + 1879659.

It is an arithmetic number, because the mean of its divisors is an integer number (2522520).

Almost surely, 2^204876945 is an apocalyptic number.

It is an amenable number.

204876945 is an abundant number, since it is smaller than the sum of its proper divisors (279446895).

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

204876945 is a wasteful number, since it uses less digits than its factorization.

204876945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 204876945 is about 14313.5231512022. The cubic root of 204876945 is about 589.5188502800.

The spelling of 204876945 in words is "two hundred four million, eight hundred seventy-six thousand, nine hundred forty-five".