20680214 has 4 divisors (see below), whose sum is σ = 31020324. Its totient is φ = 10340106.

The previous prime is 20680213. The next prime is 20680217. The reversal of 20680214 is 41208602.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20680214.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20680213) by changing a digit.

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 as a sum of consecutive naturals, namely, 5170052 + ... + 5170055.

It is an arithmetic number, because the mean of its divisors is an integer number (7755081).

Almost surely, 2^20680214 is an apocalyptic number.

20680214 is a deficient number, since it is larger than the sum of its proper divisors (10340110).

20680214 is a wasteful number, since it uses less digits than its factorization.

20680214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10340109.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 20680214 is about 4547.5503295731. The cubic root of 20680214 is about 274.4848272365.

Adding to 20680214 its reverse (41208602), we get a palindrome (61888816).

The spelling of 20680214 in words is "twenty million, six hundred eighty thousand, two hundred fourteen".