20683206 has 24 divisors (see below), whose sum is σ = 46360080. Its totient is φ = 6656496.

The previous prime is 20683193. The next prime is 20683211. The reversal of 20683206 is 60238602.

It is a self number, because there is not a number n which added to its sum of digits gives 20683206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19290 + ... + 20333.

It is an arithmetic number, because the mean of its divisors is an integer number (1931670).

Almost surely, 2^20683206 is an apocalyptic number.

20683206 is an abundant number, since it is smaller than the sum of its proper divisors (25676874).

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

20683206 is a wasteful number, since it uses less digits than its factorization.

20683206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39660 (or 39657 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 20683206 is about 4547.8792859969. The cubic root of 20683206 is about 274.4980640273.

The spelling of 20683206 in words is "twenty million, six hundred eighty-three thousand, two hundred six".