22420026 has 12 divisors (see below), whose sum is σ = 48576762. Its totient is φ = 7473336.

The previous prime is 22420003. The next prime is 22420033. The reversal of 22420026 is 62002422.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13329801 + 9090225 = 3651^2 + 3015^2 .

It is a super-3 number, since 3×22420026³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1245557 = 22420026 / (2 + 2 + 4 + 2 + 0 + 0 + 2 + 6).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22419990 and 22420008.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 622761 + ... + 622796.

Almost surely, 2^22420026 is an apocalyptic number.

22420026 is an abundant number, since it is smaller than the sum of its proper divisors (26156736).

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

22420026 is a wasteful number, since it uses less digits than its factorization.

22420026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245565 (or 1245562 counting only the distinct ones).

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

The square root of 22420026 is about 4734.9789862258. The cubic root of 22420026 is about 281.9759297397.

Adding to 22420026 its reverse (62002422), we get a palindrome (84422448).

The spelling of 22420026 in words is "twenty-two million, four hundred twenty thousand, twenty-six".