22321444 has 6 divisors (see below), whose sum is σ = 39062534. Its totient is φ = 11160720.

The previous prime is 22321433. The next prime is 22321451. The reversal of 22321444 is 44412322.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17123044 + 5198400 = 4138^2 + 2280^2 .

It is a super-3 number, since 3×22321444³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2790177 + ... + 2790184.

Almost surely, 2^22321444 is an apocalyptic number.

It is an amenable number.

22321444 is a deficient number, since it is larger than the sum of its proper divisors (16741090).

22321444 is a wasteful number, since it uses less digits than its factorization.

22321444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5580365 (or 5580363 counting only the distinct ones).

The product of its digits is 1536, while the sum is 22.

The square root of 22321444 is about 4724.5575454216. The cubic root of 22321444 is about 281.5620349828.

Adding to 22321444 its reverse (44412322), we get a palindrome (66733766).

The spelling of 22321444 in words is "twenty-two million, three hundred twenty-one thousand, four hundred forty-four".