22779818 has 8 divisors (see below), whose sum is σ = 34218912. Its totient is φ = 11373516.

The previous prime is 22779811. The next prime is 22779829. The reversal of 22779818 is 81897722.

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

It is a super-2 number, since 2×22779818² = 1037840216226248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22779811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6380 + ... + 9287.

It is an arithmetic number, because the mean of its divisors is an integer number (4277364).

Almost surely, 2^22779818 is an apocalyptic number.

22779818 is a deficient number, since it is larger than the sum of its proper divisors (11439094).

22779818 is a wasteful number, since it uses less digits than its factorization.

22779818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16396.

The product of its digits is 112896, while the sum is 44.

The square root of 22779818 is about 4772.8207592576. The cubic root of 22779818 is about 283.4762963259.

The spelling of 22779818 in words is "twenty-two million, seven hundred seventy-nine thousand, eight hundred eighteen".