204255420 has 48 divisors (see below), whose sum is σ = 584091648. Its totient is φ = 53308480.

The previous prime is 204255419. The next prime is 204255421. The reversal of 204255420 is 24552402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (204255419) and next prime (204255421).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204255421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33396 + ... + 39035.

It is an arithmetic number, because the mean of its divisors is an integer number (12168576).

Almost surely, 2^204255420 is an apocalyptic number.

204255420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204255420 is an abundant number, since it is smaller than the sum of its proper divisors (379836228).

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

204255420 is a wasteful number, since it uses less digits than its factorization.

204255420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72490 (or 72488 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 204255420 is about 14291.7955484956. The cubic root of 204255420 is about 588.9221151038.

The spelling of 204255420 in words is "two hundred four million, two hundred fifty-five thousand, four hundred twenty".