206880540 has 96 divisors (see below), whose sum is σ = 593006400. Its totient is φ = 53876736.

The previous prime is 206880521. The next prime is 206880559. The reversal of 206880540 is 45088602.

It is an interprime number because it is at equal distance from previous prime (206880521) and next prime (206880559).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 652462 + ... + 652778.

It is an arithmetic number, because the mean of its divisors is an integer number (6177150).

Almost surely, 2^206880540 is an apocalyptic number.

206880540 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 206880540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296503200).

206880540 is an abundant number, since it is smaller than the sum of its proper divisors (386125860).

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

206880540 is a wasteful number, since it uses less digits than its factorization.

206880540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551 (or 549 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 206880540 is about 14383.3424488191. The cubic root of 206880540 is about 591.4343536373.

The spelling of 206880540 in words is "two hundred six million, eight hundred eighty thousand, five hundred forty".