22231450 has 48 divisors (see below), whose sum is σ = 43383384. Its totient is φ = 8467200.

The previous prime is 22231441. The next prime is 22231459. The reversal of 22231450 is 5413222.

It is an interprime number because it is at equal distance from previous prime (22231441) and next prime (22231459).

It can be written as a sum of positive squares in 12 ways, for example, as 5067001 + 17164449 = 2251^2 + 4143^2 .

It is not an unprimeable number, because it can be changed into a prime (22231459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112752 + ... + 112948.

Almost surely, 2^22231450 is an apocalyptic number.

22231450 is a deficient number, since it is larger than the sum of its proper divisors (21151934).

22231450 is a wasteful number, since it uses less digits than its factorization.

22231450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 302 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 22231450 is about 4715.0238599608. The cubic root of 22231450 is about 281.1831314280.

Adding to 22231450 its reverse (5413222), we get a palindrome (27644672).

The spelling of 22231450 in words is "twenty-two million, two hundred thirty-one thousand, four hundred fifty".