22778079 has 16 divisors (see below), whose sum is σ = 33268320. Its totient is φ = 13798400.

The previous prime is 22778059. The next prime is 22778081. The reversal of 22778079 is 97087722.

It is a cyclic number.

It is not a de Polignac number, because 22778079 - 2⁵ = 22778047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22778079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22778009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6222 + ... + 9179.

It is an arithmetic number, because the mean of its divisors is an integer number (2079270).

Almost surely, 2^22778079 is an apocalyptic number.

22778079 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

22778079 is a deficient number, since it is larger than the sum of its proper divisors (10490241).

22778079 is a wasteful number, since it uses less digits than its factorization.

22778079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15450.

The product of its (nonzero) digits is 98784, while the sum is 42.

The square root of 22778079 is about 4772.6385783967. The cubic root of 22778079 is about 283.4690826625.

The spelling of 22778079 in words is "twenty-two million, seven hundred seventy-eight thousand, seventy-nine".