204642000 has 120 divisors (see below), whose sum is σ = 714809160. Its totient is φ = 54566400.

The previous prime is 204641963. The next prime is 204642013. The reversal of 204642000 is 246402.

204642000 is a `hidden beast` number, since 2 + 0 + 464 + 200 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6170256 + 198471744 = 2484^2 + 14088^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12316 + ... + 23684.

It is an arithmetic number, because the mean of its divisors is an integer number (5956743).

Almost surely, 2^204642000 is an apocalyptic number.

204642000 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 204642000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (357404580).

204642000 is an abundant number, since it is smaller than the sum of its proper divisors (510167160).

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

204642000 is a wasteful number, since it uses less digits than its factorization.

204642000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11398 (or 11379 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 204642000 is about 14305.3136980634. The cubic root of 204642000 is about 589.2934182385.

Adding to 204642000 its reverse (246402), we get a palindrome (204888402).

The spelling of 204642000 in words is "two hundred four million, six hundred forty-two thousand".