20022426 has 24 divisors (see below), whose sum is σ = 43995744. Its totient is φ = 6579720.

The previous prime is 20022407. The next prime is 20022427. The reversal of 20022426 is 62422002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20022399 and 20022408.

It is not an unprimeable number, because it can be changed into a prime (20022427) 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, 6556 + ... + 9111.

It is an arithmetic number, because the mean of its divisors is an integer number (1833156).

Almost surely, 2^20022426 is an apocalyptic number.

20022426 is an abundant number, since it is smaller than the sum of its proper divisors (23973318).

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

20022426 is a wasteful number, since it uses less digits than its factorization.

20022426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15746 (or 15743 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 20022426 is about 4474.6425555568. The cubic root of 20022426 is about 271.5431796447.

Adding to 20022426 its reverse (62422002), we get a palindrome (82444428).

The spelling of 20022426 in words is "twenty million, twenty-two thousand, four hundred twenty-six".