20891014 has 8 divisors (see below), whose sum is σ = 32183568. Its totient is φ = 10163160.

The previous prime is 20891009. The next prime is 20891027. The reversal of 20891014 is 41019802.

It is a happy number.

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 20891014.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141082 + ... + 141229.

It is an arithmetic number, because the mean of its divisors is an integer number (4022946).

Almost surely, 2^20891014 is an apocalyptic number.

20891014 is a deficient number, since it is larger than the sum of its proper divisors (11292554).

20891014 is a wasteful number, since it uses less digits than its factorization.

20891014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282350.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 20891014 is about 4570.6688788404. The cubic root of 20891014 is about 275.4143132259.

The spelling of 20891014 in words is "twenty million, eight hundred ninety-one thousand, fourteen".