22028782 has 8 divisors (see below), whose sum is σ = 33234696. Its totient is φ = 10950552.

The previous prime is 22028717. The next prime is 22028789. The reversal of 22028782 is 28782022.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22028789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31488 + ... + 32179.

It is an arithmetic number, because the mean of its divisors is an integer number (4154337).

Almost surely, 2^22028782 is an apocalyptic number.

22028782 is a deficient number, since it is larger than the sum of its proper divisors (11205914).

22028782 is a wasteful number, since it uses less digits than its factorization.

22028782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63842.

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 22028782 is about 4693.4829284871. The cubic root of 22028782 is about 280.3260742043.

The spelling of 22028782 in words is "twenty-two million, twenty-eight thousand, seven hundred eighty-two".