22280774 has 4 divisors (see below), whose sum is σ = 33421164. Its totient is φ = 11140386.

The previous prime is 22280743. The next prime is 22280779. The reversal of 22280774 is 47708222.

It is a happy number.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22280774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22280779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5570192 + ... + 5570195.

It is an arithmetic number, because the mean of its divisors is an integer number (8355291).

Almost surely, 2^22280774 is an apocalyptic number.

22280774 is a deficient number, since it is larger than the sum of its proper divisors (11140390).

22280774 is a wasteful number, since it uses less digits than its factorization.

22280774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11140389.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 22280774 is about 4720.2514763517. The cubic root of 22280774 is about 281.3909276279.

Adding to 22280774 its reverse (47708222), we get a palindrome (69988996).

The spelling of 22280774 in words is "twenty-two million, two hundred eighty thousand, seven hundred seventy-four".