22864778 has 8 divisors (see below), whose sum is σ = 34317540. Its totient is φ = 11425600.

The previous prime is 22864747. The next prime is 22864781. The reversal of 22864778 is 87746822.

It can be written as a sum of positive squares in 2 ways, for example, as 21967969 + 896809 = 4687^2 + 947^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4328 + ... + 8028.

Almost surely, 2^22864778 is an apocalyptic number.

22864778 is a deficient number, since it is larger than the sum of its proper divisors (11452762).

22864778 is a wasteful number, since it uses less digits than its factorization.

22864778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6792.

The product of its digits is 301056, while the sum is 44.

The square root of 22864778 is about 4781.7128730195. The cubic root of 22864778 is about 283.8282784543.

The spelling of 22864778 in words is "twenty-two million, eight hundred sixty-four thousand, seven hundred seventy-eight".