20940206 has 12 divisors (see below), whose sum is σ = 35926872. Its totient is φ = 8967036.

The previous prime is 20940203. The next prime is 20940251. The reversal of 20940206 is 60204902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20940203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16511 + ... + 17733.

It is an arithmetic number, because the mean of its divisors is an integer number (2993906).

Almost surely, 2^20940206 is an apocalyptic number.

20940206 is a deficient number, since it is larger than the sum of its proper divisors (14986666).

20940206 is an frugal number, since it uses more digits than its factorization.

20940206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2455 (or 1232 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 20940206 is about 4576.0469840245. The cubic root of 20940206 is about 275.6303161580.

The spelling of 20940206 in words is "twenty million, nine hundred forty thousand, two hundred six".