22028742 has 24 divisors (see below), whose sum is σ = 47815560. Its totient is φ = 7329600.

The previous prime is 22028717. The next prime is 22028789. The reversal of 22028742 is 24782022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17742 + ... + 18942.

It is an arithmetic number, because the mean of its divisors is an integer number (1992315).

Almost surely, 2^22028742 is an apocalyptic number.

22028742 is an abundant number, since it is smaller than the sum of its proper divisors (25786818).

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

22028742 is a wasteful number, since it uses less digits than its factorization.

22028742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2228 (or 2225 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 22028742 is about 4693.4786672574. The cubic root of 22028742 is about 280.3259045316.

The spelling of 22028742 in words is "twenty-two million, twenty-eight thousand, seven hundred forty-two".