20068680 has 64 divisors (see below), whose sum is σ = 61689600. Its totient is φ = 5219840.

The previous prime is 20068679. The next prime is 20068691. The reversal of 20068680 is 8686002.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2881 + ... + 6959.

It is an arithmetic number, because the mean of its divisors is an integer number (963900).

Almost surely, 2^20068680 is an apocalyptic number.

20068680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20068680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30844800).

20068680 is an abundant number, since it is smaller than the sum of its proper divisors (41620920).

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

20068680 is a wasteful number, since it uses less digits than its factorization.

20068680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4134 (or 4130 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 20068680 is about 4479.8080316014. The cubic root of 20068680 is about 271.7521170132.

The spelling of 20068680 in words is "twenty million, sixty-eight thousand, six hundred eighty".