204634830 has 16 divisors (see below), whose sum is σ = 491123664. Its totient is φ = 54569280.

The previous prime is 204634819. The next prime is 204634861. The reversal of 204634830 is 38436402.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 6821161 = 204634830 / (2 + 0 + 4 + 6 + 3 + 4 + 8 + 3 + 0).

It is a congruent number.

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, 3410551 + ... + 3410610.

It is an arithmetic number, because the mean of its divisors is an integer number (30695229).

Almost surely, 2^204634830 is an apocalyptic number.

204634830 is an abundant number, since it is smaller than the sum of its proper divisors (286488834).

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

204634830 is a wasteful number, since it uses less digits than its factorization.

204634830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6821171.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 204634830 is about 14305.0630896896. The cubic root of 204634830 is about 589.2865358404.

The spelling of 204634830 in words is "two hundred four million, six hundred thirty-four thousand, eight hundred thirty".