22232779 has 4 divisors (see below), whose sum is σ = 22247784. Its totient is φ = 22217776.

The previous prime is 22232761. The next prime is 22232801. The reversal of 22232779 is 97723222.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 22232779 - 2⁹ = 22232267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22232729) 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, 5002 + ... + 8335.

It is an arithmetic number, because the mean of its divisors is an integer number (5561946).

Almost surely, 2^22232779 is an apocalyptic number.

22232779 is a deficient number, since it is larger than the sum of its proper divisors (15005).

22232779 is a wasteful number, since it uses less digits than its factorization.

22232779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15004.

The product of its digits is 21168, while the sum is 34.

The square root of 22232779 is about 4715.1647903334. The cubic root of 22232779 is about 281.1887343754.

The spelling of 22232779 in words is "twenty-two million, two hundred thirty-two thousand, seven hundred seventy-nine".