22206620 has 12 divisors (see below), whose sum is σ = 46633944. Its totient is φ = 8882640.

The previous prime is 22206617. The next prime is 22206637. The reversal of 22206620 is 2660222.

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: 1110331 = 22206620 / (2 + 2 + 2 + 0 + 6 + 6 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 22206592 and 22206601.

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, 555146 + ... + 555185.

It is an arithmetic number, because the mean of its divisors is an integer number (3886162).

Almost surely, 2^22206620 is an apocalyptic number.

22206620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22206620 is an abundant number, since it is smaller than the sum of its proper divisors (24427324).

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

22206620 is a wasteful number, since it uses less digits than its factorization.

22206620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110340 (or 1110338 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 22206620 is about 4712.3900517678. The cubic root of 22206620 is about 281.0784092432.

Adding to 22206620 its reverse (2660222), we get a palindrome (24866842).

The spelling of 22206620 in words is "twenty-two million, two hundred six thousand, six hundred twenty".