20814686 has 8 divisors (see below), whose sum is σ = 31531464. Its totient is φ = 10304200.

The previous prime is 20814679. The next prime is 20814691. The reversal of 20814686 is 68641802.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51320 + ... + 51723.

It is an arithmetic number, because the mean of its divisors is an integer number (3941433).

Almost surely, 2^20814686 is an apocalyptic number.

20814686 is a deficient number, since it is larger than the sum of its proper divisors (10716778).

20814686 is a wasteful number, since it uses less digits than its factorization.

20814686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103146.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 20814686 is about 4562.3114755571. The cubic root of 20814686 is about 275.0784833843.

The spelling of 20814686 in words is "twenty million, eight hundred fourteen thousand, six hundred eighty-six".