206814988 has 24 divisors (see below), whose sum is σ = 386880480. Its totient is φ = 96497280.

The previous prime is 206814983. The next prime is 206815009. The reversal of 206814988 is 889418602.

It is a super-2 number, since 2×206814988² = 85544878522880288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (206814983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23643 + ... + 31186.

It is an arithmetic number, because the mean of its divisors is an integer number (16120020).

Almost surely, 2^206814988 is an apocalyptic number.

It is an amenable number.

206814988 is a deficient number, since it is larger than the sum of its proper divisors (180065492).

206814988 is a wasteful number, since it uses less digits than its factorization.

206814988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54897 (or 54895 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 46.

The square root of 206814988 is about 14381.0635211726. The cubic root of 206814988 is about 591.3718799020.

The spelling of 206814988 in words is "two hundred six million, eight hundred fourteen thousand, nine hundred eighty-eight".