206413172 has 24 divisors (see below), whose sum is σ = 413130816. Its totient is φ = 88397568.

The previous prime is 206413157. The next prime is 206413189. The reversal of 206413172 is 271314602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71183 + ... + 74025.

It is an arithmetic number, because the mean of its divisors is an integer number (17213784).

Almost surely, 2^206413172 is an apocalyptic number.

It is an amenable number.

206413172 is an abundant number, since it is smaller than the sum of its proper divisors (206717644).

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

206413172 is a wasteful number, since it uses less digits than its factorization.

206413172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5447 (or 5445 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 206413172 is about 14367.0864130484. The cubic root of 206413172 is about 590.9886440730.

Adding to 206413172 its reverse (271314602), we get a palindrome (477727774).

The spelling of 206413172 in words is "two hundred six million, four hundred thirteen thousand, one hundred seventy-two".