204155630 has 16 divisors (see below), whose sum is σ = 419977440. Its totient is φ = 69996192.

The previous prime is 204155599. The next prime is 204155641. The reversal of 204155630 is 36551402.

It is a self number, because there is not a number n which added to its sum of digits gives 204155630.

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, 1458185 + ... + 1458324.

It is an arithmetic number, because the mean of its divisors is an integer number (26248590).

Almost surely, 2^204155630 is an apocalyptic number.

204155630 is an abundant number, since it is smaller than the sum of its proper divisors (215821810).

204155630 is a wasteful number, since it uses less digits than its factorization.

204155630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2916523.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 204155630 is about 14288.3039581330. The cubic root of 204155630 is about 588.8261925394.

The spelling of 204155630 in words is "two hundred four million, one hundred fifty-five thousand, six hundred thirty".