22263312 has 40 divisors (see below), whose sum is σ = 57746304. Its totient is φ = 7391104.

The previous prime is 22263299. The next prime is 22263313. The reversal of 22263312 is 21336222.

It is a super-2 number, since 2×22263312² = 991310122418688, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (22263313) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 13273 + ... + 14855.

Almost surely, 2^22263312 is an apocalyptic number.

It is an amenable number.

22263312 is an abundant number, since it is smaller than the sum of its proper divisors (35482992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22263312 is a wasteful number, since it uses less digits than its factorization.

22263312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887 (or 1881 counting only the distinct ones).

The product of its digits is 864, while the sum is 21.

The square root of 22263312 is about 4718.4014242114. The cubic root of 22263312 is about 281.3173973788.

Adding to 22263312 its reverse (21336222), we get a palindrome (43599534).

The spelling of 22263312 in words is "twenty-two million, two hundred sixty-three thousand, three hundred twelve".