206972880 has 40 divisors (see below), whose sum is σ = 641616672. Its totient is φ = 55192704.

The previous prime is 206972869. The next prime is 206972891. The reversal of 206972880 is 88279602.

It is a happy number.

206972880 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (206972869) and next prime (206972891).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430954 + ... + 431433.

Almost surely, 2^206972880 is an apocalyptic number.

206972880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206972880 is an abundant number, since it is smaller than the sum of its proper divisors (434643792).

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

206972880 is a wasteful number, since it uses less digits than its factorization.

206972880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862403 (or 862397 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 206972880 is about 14386.5520539148. The cubic root of 206972880 is about 591.5223350473.

The spelling of 206972880 in words is "two hundred six million, nine hundred seventy-two thousand, eight hundred eighty".