22778841 has 8 divisors (see below), whose sum is σ = 30463264. Its totient is φ = 15140160.

The previous prime is 22778837. The next prime is 22778849. The reversal of 22778841 is 14887722.

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

It is not a de Polignac number, because 22778841 - 2² = 22778837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22778841.

It is not an unprimeable number, because it can be changed into a prime (22778849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10255 + ... + 12276.

It is an arithmetic number, because the mean of its divisors is an integer number (3807908).

Almost surely, 2^22778841 is an apocalyptic number.

It is an amenable number.

22778841 is a deficient number, since it is larger than the sum of its proper divisors (7684423).

22778841 is a wasteful number, since it uses less digits than its factorization.

22778841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22871.

The product of its digits is 50176, while the sum is 39.

The square root of 22778841 is about 4772.7184077840. The cubic root of 22778841 is about 283.4722436114.

The spelling of 22778841 in words is "twenty-two million, seven hundred seventy-eight thousand, eight hundred forty-one".