206836240 has 80 divisors (see below), whose sum is σ = 540465408. Its totient is φ = 73041408.

The previous prime is 206836213. The next prime is 206836307. The reversal of 206836240 is 42638602.

It is a tau number, because it is divible by the number of its divisors (80).

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, 19597 + ... + 28243.

Almost surely, 2^206836240 is an apocalyptic number.

206836240 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 206836240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270232704).

206836240 is an abundant number, since it is smaller than the sum of its proper divisors (333629168).

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

206836240 is a wasteful number, since it uses less digits than its factorization.

206836240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8696 (or 8690 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 206836240 is about 14381.8023905212. The cubic root of 206836240 is about 591.3921353726.

The spelling of 206836240 in words is "two hundred six million, eight hundred thirty-six thousand, two hundred forty".