204774140 has 24 divisors (see below), whose sum is σ = 430768800. Its totient is φ = 81768128.

The previous prime is 204774121. The next prime is 204774149. The reversal of 204774140 is 41477402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204774149) 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, 3434 + ... + 20526.

It is an arithmetic number, because the mean of its divisors is an integer number (17948700).

Almost surely, 2^204774140 is an apocalyptic number.

204774140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204774140 is an abundant number, since it is smaller than the sum of its proper divisors (225994660).

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

204774140 is a wasteful number, since it uses less digits than its factorization.

204774140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17701 (or 17699 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 29.

The square root of 204774140 is about 14309.9315162582. The cubic root of 204774140 is about 589.4202290885.

The spelling of 204774140 in words is "two hundred four million, seven hundred seventy-four thousand, one hundred forty".