22961216 has 14 divisors (see below), whose sum is σ = 45563790. Its totient is φ = 11480576.

The previous prime is 22961209. The next prime is 22961221. The reversal of 22961216 is 61216922.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13719616 + 9241600 = 3704^2 + 3040^2 .

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 as a sum of consecutive naturals, namely, 179321 + ... + 179448.

Almost surely, 2^22961216 is an apocalyptic number.

It is an amenable number.

22961216 is a deficient number, since it is larger than the sum of its proper divisors (22602574).

22961216 is an equidigital number, since it uses as much as digits as its factorization.

22961216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358781 (or 358771 counting only the distinct ones).

The product of its digits is 2592, while the sum is 29.

The square root of 22961216 is about 4791.7863057528. The cubic root of 22961216 is about 284.2267579977.

The spelling of 22961216 in words is "twenty-two million, nine hundred sixty-one thousand, two hundred sixteen".