204244987 has 16 divisors (see below), whose sum is σ = 221281632. Its totient is φ = 187799040.

The previous prime is 204244981. The next prime is 204245023. The reversal of 204244987 is 789442402.

It is a cyclic number.

It is not a de Polignac number, because 204244987 - 2¹¹ = 204242939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204244981) 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, 357412 + ... + 357982.

It is an arithmetic number, because the mean of its divisors is an integer number (13830102).

Almost surely, 2^204244987 is an apocalyptic number.

204244987 is a deficient number, since it is larger than the sum of its proper divisors (17036645).

204244987 is a wasteful number, since it uses less digits than its factorization.

204244987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038.

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 204244987 is about 14291.4305442108. The cubic root of 204244987 is about 588.9120879051.

The spelling of 204244987 in words is "two hundred four million, two hundred forty-four thousand, nine hundred eighty-seven".