22280772 has 24 divisors (see below), whose sum is σ = 52183936. Its totient is φ = 7399008.

The previous prime is 22280743. The next prime is 22280779. The reversal of 22280772 is 27708222.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28 + ... + 6675.

Almost surely, 2^22280772 is an apocalyptic number.

It is an amenable number.

22280772 is an abundant number, since it is smaller than the sum of its proper divisors (29903164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22280772 is a wasteful number, since it uses less digits than its factorization.

22280772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6987 (or 6985 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 22280772 is about 4720.2512644985. The cubic root of 22280772 is about 281.3909192084.

Adding to 22280772 its reverse (27708222), we get a palindrome (49988994).

The spelling of 22280772 in words is "twenty-two million, two hundred eighty thousand, seven hundred seventy-two".