22264778 has 8 divisors (see below), whose sum is σ = 33455268. Its totient is φ = 11113024.

The previous prime is 22264757. The next prime is 22264813. The reversal of 22264778 is 87746222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18292729 + 3972049 = 4277^2 + 1993^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8201 + ... + 10572.

Almost surely, 2^22264778 is an apocalyptic number.

22264778 is a deficient number, since it is larger than the sum of its proper divisors (11190490).

22264778 is a wasteful number, since it uses less digits than its factorization.

22264778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19368.

The product of its digits is 75264, while the sum is 38.

The square root of 22264778 is about 4718.5567708781. The cubic root of 22264778 is about 281.3235719955.

The spelling of 22264778 in words is "twenty-two million, two hundred sixty-four thousand, seven hundred seventy-eight".