22779436 has 12 divisors (see below), whose sum is σ = 40836600. Its totient is φ = 11111840.

The previous prime is 22779403. The next prime is 22779437. The reversal of 22779436 is 63497722.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (22779437) by changing a digit.

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, 69286 + ... + 69613.

It is an arithmetic number, because the mean of its divisors is an integer number (3403050).

Almost surely, 2^22779436 is an apocalyptic number.

It is an amenable number.

22779436 is a deficient number, since it is larger than the sum of its proper divisors (18057164).

22779436 is a wasteful number, since it uses less digits than its factorization.

22779436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138944 (or 138942 counting only the distinct ones).

The product of its digits is 127008, while the sum is 40.

The square root of 22779436 is about 4772.7807408260. The cubic root of 22779436 is about 283.4747117574.

The spelling of 22779436 in words is "twenty-two million, seven hundred seventy-nine thousand, four hundred thirty-six".