22429228 has 12 divisors (see below), whose sum is σ = 39290832. Its totient is φ = 11203280.

The previous prime is 22429223. The next prime is 22429261. The reversal of 22429228 is 82292422.

It is a self number, because there is not a number n which added to its sum of digits gives 22429228.

It is not an unprimeable number, because it can be changed into a prime (22429223) 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 3 ways as a sum of consecutive naturals, for example, 2913 + ... + 7303.

It is an arithmetic number, because the mean of its divisors is an integer number (3274236).

Almost surely, 2^22429228 is an apocalyptic number.

It is an amenable number.

22429228 is a deficient number, since it is larger than the sum of its proper divisors (16861604).

22429228 is a wasteful number, since it uses less digits than its factorization.

22429228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5672 (or 5670 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 22429228 is about 4735.9505909585. The cubic root of 22429228 is about 282.0145022135.

The spelling of 22429228 in words is "twenty-two million, four hundred twenty-nine thousand, two hundred twenty-eight".