206087860 has 48 divisors (see below), whose sum is σ = 475372800. Its totient is φ = 74426240.

The previous prime is 206087831. The next prime is 206087873. The reversal of 206087860 is 68780602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29637 + ... + 35923.

It is an arithmetic number, because the mean of its divisors is an integer number (9903600).

Almost surely, 2^206087860 is an apocalyptic number.

206087860 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 206087860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237686400).

206087860 is an abundant number, since it is smaller than the sum of its proper divisors (269284940).

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

206087860 is a wasteful number, since it uses less digits than its factorization.

206087860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6456 (or 6454 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 206087860 is about 14355.7605162527. The cubic root of 206087860 is about 590.6780101726.

The spelling of 206087860 in words is "two hundred six million, eighty-seven thousand, eight hundred sixty".