22213378 has 16 divisors (see below), whose sum is σ = 36812160. Its totient is φ = 9968400.

The previous prime is 22213369. The next prime is 22213393. The reversal of 22213378 is 87331222.

It is an unprimeable number.

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, 4653 + ... + 8128.

It is an arithmetic number, because the mean of its divisors is an integer number (2300760).

Almost surely, 2^22213378 is an apocalyptic number.

22213378 is a deficient number, since it is larger than the sum of its proper divisors (14598782).

22213378 is a wasteful number, since it uses less digits than its factorization.

22213378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12873.

The product of its digits is 4032, while the sum is 28.

The square root of 22213378 is about 4713.1070431298. The cubic root of 22213378 is about 281.1069192885.

The spelling of 22213378 in words is "twenty-two million, two hundred thirteen thousand, three hundred seventy-eight".