204289690 has 64 divisors (see below), whose sum is σ = 418037760. Its totient is φ = 71208000.

The previous prime is 204289669. The next prime is 204289711. The reversal of 204289690 is 96982402.

204289690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (204289669) and next prime (204289711).

It is a super-2 number, since 2×204289690² = 83468554880592200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 473775 + ... + 474205.

It is an arithmetic number, because the mean of its divisors is an integer number (6531840).

Almost surely, 2^204289690 is an apocalyptic number.

204289690 is an abundant number, since it is smaller than the sum of its proper divisors (213748070).

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

204289690 is a wasteful number, since it uses less digits than its factorization.

204289690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 204289690 is about 14292.9944378356. The cubic root of 204289690 is about 588.9550497374.

The spelling of 204289690 in words is "two hundred four million, two hundred eighty-nine thousand, six hundred ninety".