28220227592 has 12 divisors (see below), whose sum is σ = 52913817645. Its totient is φ = 14109876224.

The previous prime is 28220227583. The next prime is 28220227643. The reversal of 28220227592 is 29572202282.

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 25578884356 + 2641343236 = 159934^2 + 51394^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=118786.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 445448 + ... + 504840.

Almost surely, 2^28220227592 is an apocalyptic number.

It is an amenable number.

28220227592 is a deficient number, since it is larger than the sum of its proper divisors (24693590053).

28220227592 is an frugal number, since it uses more digits than its factorization.

28220227592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118792 (or 59395 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 28220227592 in words is "twenty-eight billion, two hundred twenty million, two hundred twenty-seven thousand, five hundred ninety-two".