204787130 has 16 divisors (see below), whose sum is σ = 388018080. Its totient is φ = 77603472.

The previous prime is 204787127. The next prime is 204787139. The reversal of 204787130 is 31787402.

It is a happy number.

It is a super-2 number, since 2×204787130² = 83875537227273800, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (204787139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 538724 + ... + 539103.

It is an arithmetic number, because the mean of its divisors is an integer number (24251130).

Almost surely, 2^204787130 is an apocalyptic number.

204787130 is a deficient number, since it is larger than the sum of its proper divisors (183230950).

204787130 is a wasteful number, since it uses less digits than its factorization.

204787130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077853.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 204787130 is about 14310.3853896392. The cubic root of 204787130 is about 589.4326922620.

The spelling of 204787130 in words is "two hundred four million, seven hundred eighty-seven thousand, one hundred thirty".