22423442 has 8 divisors (see below), whose sum is σ = 35613756. Its totient is φ = 10552192.

The previous prime is 22423441. The next prime is 22423463. The reversal of 22423442 is 24432422.

It can be written as a sum of positive squares in 2 ways, for example, as 16801801 + 5621641 = 4099^2 + 2371^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×22423442² = 1005621502254728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22423441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329723 + ... + 329790.

Almost surely, 2^22423442 is an apocalyptic number.

22423442 is a deficient number, since it is larger than the sum of its proper divisors (13190314).

22423442 is a wasteful number, since it uses less digits than its factorization.

22423442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659532.

The product of its digits is 3072, while the sum is 23.

The square root of 22423442 is about 4735.3396921446. The cubic root of 22423442 is about 281.9902499857.

Adding to 22423442 its reverse (24432422), we get a palindrome (46855864).

The spelling of 22423442 in words is "twenty-two million, four hundred twenty-three thousand, four hundred forty-two".