22963281 has 16 divisors (see below), whose sum is σ = 34480128. Its totient is φ = 13467600.

The previous prime is 22963279. The next prime is 22963301. The reversal of 22963281 is 18236922.

It is a happy number.

It is not a de Polignac number, because 22963281 - 2¹ = 22963279 is a prime.

It is a super-2 number, since 2×22963281² = 1054624548569922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (22963981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10201 + ... + 12246.

It is an arithmetic number, because the mean of its divisors is an integer number (2155008).

Almost surely, 2^22963281 is an apocalyptic number.

It is an amenable number.

22963281 is a deficient number, since it is larger than the sum of its proper divisors (11516847).

22963281 is a wasteful number, since it uses less digits than its factorization.

22963281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22492.

The product of its digits is 10368, while the sum is 33.

The square root of 22963281 is about 4792.0017737893. The cubic root of 22963281 is about 284.2352783168.

The spelling of 22963281 in words is "twenty-two million, nine hundred sixty-three thousand, two hundred eighty-one".