22276816 has 40 divisors (see below), whose sum is σ = 45870080. Its totient is φ = 10450944.

The previous prime is 22276799. The next prime is 22276819. The reversal of 22276816 is 61867222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22276819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38320 + ... + 38896.

It is an arithmetic number, because the mean of its divisors is an integer number (1146752).

Almost surely, 2^22276816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22276816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22935040).

22276816 is an abundant number, since it is smaller than the sum of its proper divisors (23593264).

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

22276816 is a wasteful number, since it uses less digits than its factorization.

22276816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731 (or 725 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 22276816 is about 4719.8322004071. The cubic root of 22276816 is about 281.3742643641.

It can be divided in two parts, 222768 and 16, that added together give a square (222784 = 472²).

The spelling of 22276816 in words is "twenty-two million, two hundred seventy-six thousand, eight hundred sixteen".