206739400 has 48 divisors (see below), whose sum is σ = 549339840. Its totient is φ = 70881600.

The previous prime is 206739389. The next prime is 206739443. The reversal of 206739400 is 4937602.

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 11 ways as a sum of consecutive naturals, for example, 72436 + ... + 75235.

It is an arithmetic number, because the mean of its divisors is an integer number (11444580).

Almost surely, 2^206739400 is an apocalyptic number.

206739400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206739400 is an abundant number, since it is smaller than the sum of its proper divisors (342600440).

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

206739400 is a wasteful number, since it uses less digits than its factorization.

206739400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147694 (or 147685 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 206739400 is about 14378.4352417083. The cubic root of 206739400 is about 591.2998250588.

The spelling of 206739400 in words is "two hundred six million, seven hundred thirty-nine thousand, four hundred".