206239700 has 36 divisors (see below), whose sum is σ = 452588220. Its totient is φ = 81565440.

The previous prime is 206239679. The next prime is 206239723. The reversal of 206239700 is 7932602.

It can be written as a sum of positive squares in 6 ways, for example, as 75411856 + 130827844 = 8684^2 + 11438^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2687 + ... + 20486.

It is an arithmetic number, because the mean of its divisors is an integer number (12571895).

Almost surely, 2^206239700 is an apocalyptic number.

206239700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206239700 is an abundant number, since it is smaller than the sum of its proper divisors (246348520).

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

206239700 is a wasteful number, since it uses less digits than its factorization.

206239700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23276 (or 23269 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 206239700 is about 14361.0480118966. The cubic root of 206239700 is about 590.8230397915.

The spelling of 206239700 in words is "two hundred six million, two hundred thirty-nine thousand, seven hundred".