204535140 has 24 divisors (see below), whose sum is σ = 572698560. Its totient is φ = 54542688.

The previous prime is 204535129. The next prime is 204535141. The reversal of 204535140 is 41535402.

It is a self number, because there is not a number n which added to its sum of digits gives 204535140.

It is not an unprimeable number, because it can be changed into a prime (204535141) 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 7 ways as a sum of consecutive naturals, for example, 1704400 + ... + 1704519.

It is an arithmetic number, because the mean of its divisors is an integer number (23862440).

Almost surely, 2^204535140 is an apocalyptic number.

204535140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204535140 is an abundant number, since it is smaller than the sum of its proper divisors (368163420).

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

204535140 is a wasteful number, since it uses less digits than its factorization.

204535140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3408931 (or 3408929 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 204535140 is about 14301.5782345866. The cubic root of 204535140 is about 589.1908279284.

The spelling of 204535140 in words is "two hundred four million, five hundred thirty-five thousand, one hundred forty".