20068220 has 12 divisors (see below), whose sum is σ = 42143304. Its totient is φ = 8027280.

The previous prime is 20068219. The next prime is 20068247. The reversal of 20068220 is 2286002.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1003411 = 20068220 / (2 + 0 + 0 + 6 + 8 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 20068192 and 20068201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 501686 + ... + 501725.

It is an arithmetic number, because the mean of its divisors is an integer number (3511942).

Almost surely, 2^20068220 is an apocalyptic number.

20068220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20068220 is an abundant number, since it is smaller than the sum of its proper divisors (22075084).

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

20068220 is a wasteful number, since it uses less digits than its factorization.

20068220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003420 (or 1003418 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 20068220 is about 4479.7566898214. The cubic root of 20068220 is about 271.7500406945.

The spelling of 20068220 in words is "twenty million, sixty-eight thousand, two hundred twenty".