204726540 has 96 divisors (see below), whose sum is σ = 587833344. Its totient is φ = 53222400.

The previous prime is 204726523. The next prime is 204726547. The reversal of 204726540 is 45627402.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 204726498 and 204726507.

It is not an unprimeable number, because it can be changed into a prime (204726547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 510340 + ... + 510740.

It is an arithmetic number, because the mean of its divisors is an integer number (6123264).

Almost surely, 2^204726540 is an apocalyptic number.

204726540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204726540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293916672).

204726540 is an abundant number, since it is smaller than the sum of its proper divisors (383106804).

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

204726540 is a wasteful number, since it uses less digits than its factorization.

204726540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607 (or 605 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 204726540 is about 14308.2682390288. The cubic root of 204726540 is about 589.3745550643.

The spelling of 204726540 in words is "two hundred four million, seven hundred twenty-six thousand, five hundred forty".