20679926 has 4 divisors (see below), whose sum is σ = 31019892. Its totient is φ = 10339962.

The previous prime is 20679877. The next prime is 20679959. The reversal of 20679926 is 62997602.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5169980 + ... + 5169983.

It is an arithmetic number, because the mean of its divisors is an integer number (7754973).

Almost surely, 2^20679926 is an apocalyptic number.

20679926 is a deficient number, since it is larger than the sum of its proper divisors (10339966).

20679926 is a wasteful number, since it uses less digits than its factorization.

20679926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10339965.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 20679926 is about 4547.5186640629. The cubic root of 20679926 is about 274.4835530395.

The spelling of 20679926 in words is "twenty million, six hundred seventy-nine thousand, nine hundred twenty-six".