22315444 has 6 divisors (see below), whose sum is σ = 39052034. Its totient is φ = 11157720.

The previous prime is 22315429. The next prime is 22315453. The reversal of 22315444 is 44451322.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 14531344 + 7784100 = 3812^2 + 2790^2 .

It is a super-3 number, since 3×22315444³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2789427 + ... + 2789434.

Almost surely, 2^22315444 is an apocalyptic number.

It is an amenable number.

22315444 is a deficient number, since it is larger than the sum of its proper divisors (16736590).

22315444 is a wasteful number, since it uses less digits than its factorization.

22315444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5578865 (or 5578863 counting only the distinct ones).

The product of its digits is 3840, while the sum is 25.

The square root of 22315444 is about 4723.9225226500. The cubic root of 22315444 is about 281.5368047811.

Adding to 22315444 its reverse (44451322), we get a palindrome (66766766).

The spelling of 22315444 in words is "twenty-two million, three hundred fifteen thousand, four hundred forty-four".