206225724 has 12 divisors (see below), whose sum is σ = 481193384. Its totient is φ = 68741904.

The previous prime is 206225693. The next prime is 206225729. The reversal of 206225724 is 427522602.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 206225691 and 206225700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206225729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8592727 + ... + 8592750.

Almost surely, 2^206225724 is an apocalyptic number.

It is an amenable number.

206225724 is an abundant number, since it is smaller than the sum of its proper divisors (274967660).

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

206225724 is a wasteful number, since it uses less digits than its factorization.

206225724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17185484 (or 17185482 counting only the distinct ones).

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

The square root of 206225724 is about 14360.5614096386. The cubic root of 206225724 is about 590.8096936230.

The spelling of 206225724 in words is "two hundred six million, two hundred twenty-five thousand, seven hundred twenty-four".