22312768 has 14 divisors (see below), whose sum is σ = 44277026. Its totient is φ = 11156352.

The previous prime is 22312753. The next prime is 22312769. The reversal of 22312768 is 86721322.

It can be written as a sum of positive squares in only one way, i.e., 11343424 + 10969344 = 3368^2 + 3312^2 .

It is a super-3 number, since 3×22312768³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22312769) 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 as a sum of consecutive naturals, namely, 174255 + ... + 174382.

Almost surely, 2^22312768 is an apocalyptic number.

It is an amenable number.

22312768 is a deficient number, since it is larger than the sum of its proper divisors (21964258).

22312768 is an equidigital number, since it uses as much as digits as its factorization.

22312768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348649 (or 348639 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 22312768 is about 4723.6392749659. The cubic root of 22312768 is about 281.5255506529.

The spelling of 22312768 in words is "twenty-two million, three hundred twelve thousand, seven hundred sixty-eight".