22864816 has 40 divisors (see below), whose sum is σ = 49014224. Its totient is φ = 10264320.

The previous prime is 22864811. The next prime is 22864817. The reversal of 22864816 is 61846822.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (22864811) 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, 6211 + ... + 9181.

Almost surely, 2^22864816 is an apocalyptic number.

22864816 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22864816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24507112).

22864816 is an abundant number, since it is smaller than the sum of its proper divisors (26149408).

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

22864816 is a wasteful number, since it uses less digits than its factorization.

22864816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3029 (or 3023 counting only the distinct ones).

The product of its digits is 36864, while the sum is 37.

The square root of 22864816 is about 4781.7168464893. The cubic root of 22864816 is about 283.8284356899.

The spelling of 22864816 in words is "twenty-two million, eight hundred sixty-four thousand, eight hundred sixteen".