28058222656 has 28 divisors (see below), whose sum is σ = 55966547452. Its totient is φ = 13956415488.

The previous prime is 28058222653. The next prime is 28058222657. The reversal of 28058222656 is 65622285082.

It can be written as a sum of positive squares in 2 ways, for example, as 19048416256 + 9009806400 = 138016^2 + 94920^2 .

It is a super-2 number, since 2×28058222656² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28058222653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1123425 + ... + 1148128.

Almost surely, 2^28058222656 is an apocalyptic number.

It is an amenable number.

28058222656 is a deficient number, since it is larger than the sum of its proper divisors (27908324796).

28058222656 is a wasteful number, since it uses less digits than its factorization.

28058222656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271758 (or 2271748 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 46.

The spelling of 28058222656 in words is "twenty-eight billion, fifty-eight million, two hundred twenty-two thousand, six hundred fifty-six".