20622224 has 40 divisors (see below), whose sum is σ = 48354048. Its totient is φ = 8317440.

The previous prime is 20622197. The next prime is 20622229. The reversal of 20622224 is 42222602.

It is a super-2 number, since 2×20622224² = 850552245412352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20622196 and 20622205.

It is not an unprimeable number, because it can be changed into a prime (20622229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3512 + ... + 7319.

Almost surely, 2^20622224 is an apocalyptic number.

It is an amenable number.

20622224 is an abundant number, since it is smaller than the sum of its proper divisors (27731824).

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

20622224 is a wasteful number, since it uses less digits than its factorization.

20622224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10863 (or 10857 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 20622224 is about 4541.1698933204. The cubic root of 20622224 is about 274.2280233742.

Adding to 20622224 its reverse (42222602), we get a palindrome (62844826).

The spelling of 20622224 in words is "twenty million, six hundred twenty-two thousand, two hundred twenty-four".