22224678 has 48 divisors (see below), whose sum is σ = 53992704. Its totient is φ = 5973120.

The previous prime is 22224677. The next prime is 22224689. The reversal of 22224678 is 87642222.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22224673) 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 23 ways as a sum of consecutive naturals, for example, 11223 + ... + 13053.

It is an arithmetic number, because the mean of its divisors is an integer number (1124848).

Almost surely, 2^22224678 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22224678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26996352).

22224678 is an abundant number, since it is smaller than the sum of its proper divisors (31768026).

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

22224678 is a wasteful number, since it uses less digits than its factorization.

22224678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1877 (or 1860 counting only the distinct ones).

The product of its digits is 21504, while the sum is 33.

The square root of 22224678 is about 4714.3056752824. The cubic root of 22224678 is about 281.1545778018.

The spelling of 22224678 in words is "twenty-two million, two hundred twenty-four thousand, six hundred seventy-eight".