206759172 has 12 divisors (see below), whose sum is σ = 482438096. Its totient is φ = 68919720.

The previous prime is 206759131. The next prime is 206759173. The reversal of 206759172 is 271957602.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×206759172² = 85498710412251168, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 206759172.

It is not an unprimeable number, because it can be changed into a prime (206759173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8614954 + ... + 8614977.

Almost surely, 2^206759172 is an apocalyptic number.

It is an amenable number.

206759172 is an abundant number, since it is smaller than the sum of its proper divisors (275678924).

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

206759172 is a wasteful number, since it uses less digits than its factorization.

206759172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17229938 (or 17229936 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 206759172 is about 14379.1227827013. The cubic root of 206759172 is about 591.3186745661.

The spelling of 206759172 in words is "two hundred six million, seven hundred fifty-nine thousand, one hundred seventy-two".