22248779 has 4 divisors (see below), whose sum is σ = 25427184. Its totient is φ = 19070376.

The previous prime is 22248761. The next prime is 22248823. The reversal of 22248779 is 97784222.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22248779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22248739) 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, 1589192 + ... + 1589205.

It is an arithmetic number, because the mean of its divisors is an integer number (6356796).

Almost surely, 2^22248779 is an apocalyptic number.

22248779 is a deficient number, since it is larger than the sum of its proper divisors (3178405).

22248779 is an equidigital number, since it uses as much as digits as its factorization.

22248779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3178404.

The product of its digits is 112896, while the sum is 41.

The square root of 22248779 is about 4716.8611385115. The cubic root of 22248779 is about 281.2561714531.

The spelling of 22248779 in words is "twenty-two million, two hundred forty-eight thousand, seven hundred seventy-nine".