204315870 has 32 divisors (see below), whose sum is σ = 534936960. Its totient is φ = 49531040.

The previous prime is 204315863. The next prime is 204315889. The reversal of 204315870 is 78513402.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309240 + ... + 309899.

It is an arithmetic number, because the mean of its divisors is an integer number (16716780).

Almost surely, 2^204315870 is an apocalyptic number.

204315870 is an abundant number, since it is smaller than the sum of its proper divisors (330621090).

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

204315870 is a wasteful number, since it uses less digits than its factorization.

204315870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619160.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 204315870 is about 14293.9102417778. The cubic root of 204315870 is about 588.9802071247.

The spelling of 204315870 in words is "two hundred four million, three hundred fifteen thousand, eight hundred seventy".