20963206 has 8 divisors (see below), whose sum is σ = 34303464. Its totient is φ = 9528720.

The previous prime is 20963197. The next prime is 20963219. The reversal of 20963206 is 60236902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476415 + ... + 476458.

It is an arithmetic number, because the mean of its divisors is an integer number (4287933).

Almost surely, 2^20963206 is an apocalyptic number.

20963206 is a deficient number, since it is larger than the sum of its proper divisors (13340258).

20963206 is a wasteful number, since it uses less digits than its factorization.

20963206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952886.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 20963206 is about 4578.5593804165. The cubic root of 20963206 is about 275.7311935110.

The spelling of 20963206 in words is "twenty million, nine hundred sixty-three thousand, two hundred six".