204307245 has 16 divisors (see below), whose sum is σ = 363213120. Its totient is φ = 108963792.

The previous prime is 204307231. The next prime is 204307249. The reversal of 204307245 is 542703402.

It is not a de Polignac number, because 204307245 - 2²⁰ = 203258669 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204307249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 756559 + ... + 756828.

It is an arithmetic number, because the mean of its divisors is an integer number (22700820).

Almost surely, 2^204307245 is an apocalyptic number.

It is an amenable number.

204307245 is a deficient number, since it is larger than the sum of its proper divisors (158905875).

204307245 is a wasteful number, since it uses less digits than its factorization.

204307245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513401 (or 1513395 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 204307245 is about 14293.6085366852. The cubic root of 204307245 is about 588.9719192618.

The spelling of 204307245 in words is "two hundred four million, three hundred seven thousand, two hundred forty-five".