22281026 has 4 divisors (see below), whose sum is σ = 33421542. Its totient is φ = 11140512.

The previous prime is 22281023. The next prime is 22281029. The reversal of 22281026 is 62018222.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (22281023) and next prime (22281029).

It can be written as a sum of positive squares in only one way, i.e., 18913801 + 3367225 = 4349^2 + 1835^2 .

It is a super-2 number, since 2×22281026² = 992888239225352, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22280992 and 22281010.

It is not an unprimeable number, because it can be changed into a prime (22281023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5570255 + ... + 5570258.

Almost surely, 2^22281026 is an apocalyptic number.

22281026 is a deficient number, since it is larger than the sum of its proper divisors (11140516).

22281026 is a wasteful number, since it uses less digits than its factorization.

22281026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11140515.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 22281026 is about 4720.2781697692. The cubic root of 22281026 is about 281.3919884864.

Adding to 22281026 its reverse (62018222), we get a palindrome (84299248).

The spelling of 22281026 in words is "twenty-two million, two hundred eighty-one thousand, twenty-six".