22321616 has 20 divisors (see below), whose sum is σ = 44169792. Its totient is φ = 10922976.

The previous prime is 22321603. The next prime is 22321667. The reversal of 22321616 is 61612322.

It is a super-3 number, since 3×22321616³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22321591 and 22321600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14090 + ... + 15593.

Almost surely, 2^22321616 is an apocalyptic number.

It is an amenable number.

22321616 is a deficient number, since it is larger than the sum of its proper divisors (21848176).

22321616 is a wasteful number, since it uses less digits than its factorization.

22321616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29738 (or 29732 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 22321616 is about 4724.5757481492. The cubic root of 22321616 is about 281.5627581819.

Adding to 22321616 its reverse (61612322), we get a palindrome (83933938).

The spelling of 22321616 in words is "twenty-two million, three hundred twenty-one thousand, six hundred sixteen".