20973814 has 8 divisors (see below), whose sum is σ = 31930488. Its totient is φ = 10330320.

The previous prime is 20973803. The next prime is 20973833. The reversal of 20973814 is 41837902.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20973814.

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, 78127 + ... + 78394.

It is an arithmetic number, because the mean of its divisors is an integer number (3991311).

Almost surely, 2^20973814 is an apocalyptic number.

20973814 is a deficient number, since it is larger than the sum of its proper divisors (10956674).

20973814 is a wasteful number, since it uses less digits than its factorization.

20973814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156590.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 20973814 is about 4579.7176768880. The cubic root of 20973814 is about 275.7776950380. Note that the first 3 decimals are identical.

The spelling of 20973814 in words is "twenty million, nine hundred seventy-three thousand, eight hundred fourteen".