20718102 has 8 divisors (see below), whose sum is σ = 41436216. Its totient is φ = 6906032.

The previous prime is 20718091. The next prime is 20718107. The reversal of 20718102 is 20181702.

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

20718102 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20718107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1726503 + ... + 1726514.

It is an arithmetic number, because the mean of its divisors is an integer number (5179527).

Almost surely, 2^20718102 is an apocalyptic number.

20718102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20718102 is a wasteful number, since it uses less digits than its factorization.

20718102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3453022.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 20718102 is about 4551.7141825910. The cubic root of 20718102 is about 274.6523518817.

Adding to 20718102 its reverse (20181702), we get a palindrome (40899804).

The spelling of 20718102 in words is "twenty million, seven hundred eighteen thousand, one hundred two".