204256620 has 48 divisors (see below), whose sum is σ = 635466720. Its totient is φ = 54468288.

The previous prime is 204256589. The next prime is 204256621. The reversal of 204256620 is 26652402.

204256620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (204256621) 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, 188587 + ... + 189666.

It is an arithmetic number, because the mean of its divisors is an integer number (13238890).

Almost surely, 2^204256620 is an apocalyptic number.

204256620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204256620 is an abundant number, since it is smaller than the sum of its proper divisors (431210100).

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

204256620 is a wasteful number, since it uses less digits than its factorization.

204256620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378271 (or 378263 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 204256620 is about 14291.8375305627. The cubic root of 204256620 is about 588.9232684068.

The spelling of 204256620 in words is "two hundred four million, two hundred fifty-six thousand, six hundred twenty".