22236030728 has 12 divisors (see below), whose sum is σ = 41693348445. Its totient is φ = 11117804480.

The previous prime is 22236030727. The next prime is 22236030763. The reversal of 22236030728 is 82703063222.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 17449881604 + 4786149124 = 132098^2 + 69182^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=105442.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22236030721) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 395408 + ... + 448128.

Almost surely, 2^22236030728 is an apocalyptic number.

It is an amenable number.

22236030728 is a deficient number, since it is larger than the sum of its proper divisors (19457317717).

22236030728 is an frugal number, since it uses more digits than its factorization.

22236030728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105448 (or 52723 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The spelling of 22236030728 in words is "twenty-two billion, two hundred thirty-six million, thirty thousand, seven hundred twenty-eight".