204861388 has 6 divisors (see below), whose sum is σ = 358507436. Its totient is φ = 102430692.

The previous prime is 204861367. The next prime is 204861389. The reversal of 204861388 is 883168402.

It is a self number, because there is not a number n which added to its sum of digits gives 204861388.

It is not an unprimeable number, because it can be changed into a prime (204861389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25607670 + ... + 25607677.

Almost surely, 2^204861388 is an apocalyptic number.

It is an amenable number.

204861388 is a deficient number, since it is larger than the sum of its proper divisors (153646048).

204861388 is a wasteful number, since it uses less digits than its factorization.

204861388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51215351 (or 51215349 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 204861388 is about 14312.9797037514. The cubic root of 204861388 is about 589.5039285150.

It can be divided in two parts, 2048 and 61388, that added together give a palindrome (63436).

The spelling of 204861388 in words is "two hundred four million, eight hundred sixty-one thousand, three hundred eighty-eight".