206790172 has 12 divisors (see below), whose sum is σ = 361989376. Its totient is φ = 103364640.

The previous prime is 206790169. The next prime is 206790179. The reversal of 206790172 is 271097602.

206790172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206790179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15397 + ... + 25507.

Almost surely, 2^206790172 is an apocalyptic number.

It is an amenable number.

206790172 is a deficient number, since it is larger than the sum of its proper divisors (155199204).

206790172 is a wasteful number, since it uses less digits than its factorization.

206790172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15228 (or 15226 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 206790172 is about 14380.2006940098. The cubic root of 206790172 is about 591.3482257950.

It can be divided in two parts, 20 and 6790172, that multiplied together give a triangular number (135803440 = T₁₆₄₈₀).

The spelling of 206790172 in words is "two hundred six million, seven hundred ninety thousand, one hundred seventy-two".