204725840 has 40 divisors (see below), whose sum is σ = 519261408. Its totient is φ = 74445440.

The previous prime is 204725837. The next prime is 204725861. The reversal of 204725840 is 48527402.

204725840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 204725797 and 204725806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115442 + ... + 117201.

Almost surely, 2^204725840 is an apocalyptic number.

204725840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204725840 is an abundant number, since it is smaller than the sum of its proper divisors (314535568).

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

204725840 is a wasteful number, since it uses less digits than its factorization.

204725840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232667 (or 232661 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 204725840 is about 14308.2437776269. The cubic root of 204725840 is about 589.3738833346.

The spelling of 204725840 in words is "two hundred four million, seven hundred twenty-five thousand, eight hundred forty".