204129516 has 48 divisors (see below), whose sum is σ = 484711136. Its totient is φ = 66852864.

The previous prime is 204129509. The next prime is 204129533. The reversal of 204129516 is 615921402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182190 + ... + 183306.

Almost surely, 2^204129516 is an apocalyptic number.

It is an amenable number.

204129516 is an abundant number, since it is smaller than the sum of its proper divisors (280581620).

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

204129516 is a wasteful number, since it uses less digits than its factorization.

204129516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378 (or 1376 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 204129516 is about 14287.3901045642. The cubic root of 204129516 is about 588.8010854469.

The spelling of 204129516 in words is "two hundred four million, one hundred twenty-nine thousand, five hundred sixteen".