20680102 has 4 divisors (see below), whose sum is σ = 31020156. Its totient is φ = 10340050.

The previous prime is 20680091. The next prime is 20680133. The reversal of 20680102 is 20108602.

It is a happy number.

20680102 is nontrivially palindromic in base 14.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20108602 = 2 ⋅10054301.

It is a self number, because there is not a number n which added to its sum of digits gives 20680102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5170024 + ... + 5170027.

It is an arithmetic number, because the mean of its divisors is an integer number (7755039).

Almost surely, 2^20680102 is an apocalyptic number.

20680102 is a deficient number, since it is larger than the sum of its proper divisors (10340054).

20680102 is a wasteful number, since it uses less digits than its factorization.

20680102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10340053.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 20680102 is about 4547.5380152342. The cubic root of 20680102 is about 274.4843317168.

Adding to 20680102 its reverse (20108602), we get a palindrome (40788704).

It can be divided in two parts, 206 and 80102, that added together give a palindrome (80308).

The spelling of 20680102 in words is "twenty million, six hundred eighty thousand, one hundred two".