206361880 has 16 divisors (see below), whose sum is σ = 464314320. Its totient is φ = 82544736.

The previous prime is 206361863. The next prime is 206361889. The reversal of 206361880 is 88163602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206361889) 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, 2579484 + ... + 2579563.

It is an arithmetic number, because the mean of its divisors is an integer number (29019645).

Almost surely, 2^206361880 is an apocalyptic number.

206361880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206361880 is an abundant number, since it is smaller than the sum of its proper divisors (257952440).

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

206361880 is a wasteful number, since it uses less digits than its factorization.

206361880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5159058 (or 5159054 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 206361880 is about 14365.3012498868. The cubic root of 206361880 is about 590.9396880553.

The spelling of 206361880 in words is "two hundred six million, three hundred sixty-one thousand, eight hundred eighty".