206406772 has 24 divisors (see below), whose sum is σ = 424361952. Its totient is φ = 86604000.

The previous prime is 206406763. The next prime is 206406797. The reversal of 206406772 is 277604602.

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, 179854 + ... + 180997.

It is an arithmetic number, because the mean of its divisors is an integer number (17681748).

Almost surely, 2^206406772 is an apocalyptic number.

206406772 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

206406772 is an abundant number, since it is smaller than the sum of its proper divisors (217955180).

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

206406772 is a wasteful number, since it uses less digits than its factorization.

206406772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360879 (or 360877 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 206406772 is about 14366.8636800103. The cubic root of 206406772 is about 590.9825359899.

The spelling of 206406772 in words is "two hundred six million, four hundred six thousand, seven hundred seventy-two".