20063220 has 24 divisors (see below), whose sum is σ = 56177184. Its totient is φ = 5350176.

The previous prime is 20063209. The next prime is 20063243. The reversal of 20063220 is 2236002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20063220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167134 + ... + 167253.

It is an arithmetic number, because the mean of its divisors is an integer number (2340716).

Almost surely, 2^20063220 is an apocalyptic number.

20063220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20063220 is an abundant number, since it is smaller than the sum of its proper divisors (36113964).

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

20063220 is a wasteful number, since it uses less digits than its factorization.

20063220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334399 (or 334397 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 20063220 is about 4479.1985890335. The cubic root of 20063220 is about 271.7274699655.

Adding to 20063220 its reverse (2236002), we get a palindrome (22299222).

The spelling of 20063220 in words is "twenty million, sixty-three thousand, two hundred twenty".