20716214 has 8 divisors (see below), whose sum is σ = 31101840. Its totient is φ = 10348936.

The previous prime is 20716187. The next prime is 20716229. The reversal of 20716214 is 41261702.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20716214.

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, 1289 + ... + 6564.

It is an arithmetic number, because the mean of its divisors is an integer number (3887730).

Almost surely, 2^20716214 is an apocalyptic number.

20716214 is a deficient number, since it is larger than the sum of its proper divisors (10385626).

20716214 is a wasteful number, since it uses less digits than its factorization.

20716214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9174.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 20716214 is about 4551.5067834729. The cubic root of 20716214 is about 274.6440087849.

Adding to 20716214 its reverse (41261702), we get a palindrome (61977916).

The spelling of 20716214 in words is "twenty million, seven hundred sixteen thousand, two hundred fourteen".