20622267 has 12 divisors (see below), whose sum is σ = 29847480. Its totient is φ = 13720608.

The previous prime is 20622257. The next prime is 20622289. The reversal of 20622267 is 76222602.

It is not a de Polignac number, because 20622267 - 2¹⁰ = 20621243 is a prime.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 20622267.

It is not an unprimeable number, because it can be changed into a prime (20622257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3108 + ... + 7134.

It is an arithmetic number, because the mean of its divisors is an integer number (2487290).

Almost surely, 2^20622267 is an apocalyptic number.

20622267 is a deficient number, since it is larger than the sum of its proper divisors (9225213).

20622267 is a wasteful number, since it uses less digits than its factorization.

20622267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4602 (or 4599 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 20622267 is about 4541.1746277808. The cubic root of 20622267 is about 274.2282139744.

Adding to 20622267 its reverse (76222602), we get a palindrome (96844869).

The spelling of 20622267 in words is "twenty million, six hundred twenty-two thousand, two hundred sixty-seven".