204055140 has 24 divisors (see below), whose sum is σ = 571354560. Its totient is φ = 54414688.

The previous prime is 204055139. The next prime is 204055157. The reversal of 204055140 is 41550402.

It is a super-3 number, since 3×204055140³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1700400 + ... + 1700519.

It is an arithmetic number, because the mean of its divisors is an integer number (23806440).

Almost surely, 2^204055140 is an apocalyptic number.

204055140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204055140 is an abundant number, since it is smaller than the sum of its proper divisors (367299420).

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

204055140 is a wasteful number, since it uses less digits than its factorization.

204055140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3400931 (or 3400929 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 204055140 is about 14284.7870127629. The cubic root of 204055140 is about 588.7295655116.

The spelling of 204055140 in words is "two hundred four million, fifty-five thousand, one hundred forty".