22247779 has 16 divisors (see below), whose sum is σ = 23639040. Its totient is φ = 20917120.

The previous prime is 22247773. The next prime is 22247791. The reversal of 22247779 is 97774222.

It is a cyclic number.

It is not a de Polignac number, because 22247779 - 2¹¹ = 22245731 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (22247773) 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, 196827 + ... + 196939.

It is an arithmetic number, because the mean of its divisors is an integer number (1477440).

Almost surely, 2^22247779 is an apocalyptic number.

22247779 is a deficient number, since it is larger than the sum of its proper divisors (1391261).

22247779 is a wasteful number, since it uses less digits than its factorization.

22247779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290.

The product of its digits is 98784, while the sum is 40.

The square root of 22247779 is about 4716.7551346238. The cubic root of 22247779 is about 281.2519575831.

The spelling of 22247779 in words is "twenty-two million, two hundred forty-seven thousand, seven hundred seventy-nine".