204651612 has 72 divisors (see below), whose sum is σ = 566721792. Its totient is φ = 61754400.

The previous prime is 204651611. The next prime is 204651613. The reversal of 204651612 is 216156402.

204651612 is a `hidden beast` number, since 2 + 0 + 4 + 651 + 6 + 1 + 2 = 666.

204651612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (204651611) and next prime (204651613).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204651611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106363 + ... + 108269.

It is an arithmetic number, because the mean of its divisors is an integer number (7871136).

Almost surely, 2^204651612 is an apocalyptic number.

204651612 is a gapful number since it is divisible by the number (22) 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 204651612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283360896).

204651612 is an abundant number, since it is smaller than the sum of its proper divisors (362070180).

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

204651612 is a wasteful number, since it uses less digits than its factorization.

204651612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199 (or 2194 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 204651612 is about 14305.6496531965. The cubic root of 204651612 is about 589.3026444313.

The spelling of 204651612 in words is "two hundred four million, six hundred fifty-one thousand, six hundred twelve".