204268840 has 32 divisors (see below), whose sum is σ = 462924000. Its totient is φ = 81117504.

The previous prime is 204268793. The next prime is 204268849. The reversal of 204268840 is 48862402.

It is a junction number, because it is equal to n+sod(n) for n = 204268796 and 204268805.

It is not an unprimeable number, because it can be changed into a prime (204268849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12810 + ... + 23929.

It is an arithmetic number, because the mean of its divisors is an integer number (14466375).

Almost surely, 2^204268840 is an apocalyptic number.

204268840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204268840 is an abundant number, since it is smaller than the sum of its proper divisors (258655160).

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

204268840 is a wasteful number, since it uses less digits than its factorization.

204268840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36889 (or 36885 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 204268840 is about 14292.2650409234. The cubic root of 204268840 is about 588.9350126182.

The spelling of 204268840 in words is "two hundred four million, two hundred sixty-eight thousand, eight hundred forty".