204312845 has 8 divisors (see below), whose sum is σ = 267464160. Its totient is φ = 148591120.

The previous prime is 204312821. The next prime is 204312863. The reversal of 204312845 is 548213402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 204312845 - 2⁶ = 204312781 is a prime.

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, 1857335 + ... + 1857444.

It is an arithmetic number, because the mean of its divisors is an integer number (33433020).

Almost surely, 2^204312845 is an apocalyptic number.

It is an amenable number.

204312845 is a deficient number, since it is larger than the sum of its proper divisors (63151315).

204312845 is a wasteful number, since it uses less digits than its factorization.

204312845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3714795.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 204312845 is about 14293.8044270936. The cubic root of 204312845 is about 588.9773003936.

The spelling of 204312845 in words is "two hundred four million, three hundred twelve thousand, eight hundred forty-five".