28059173062281 has 9 divisors (see below), whose sum is σ = 40529939599591. Its totient is φ = 18706104780672.

The previous prime is 28059173062273. The next prime is 28059173062309. The reversal of 28059173062281 is 18226037195082.

The square root of 28059173062281 is 5297091.

It is a perfect power (a square), and thus also a powerful number.

28059173062281 is a `hidden beast` number, since 2 + 8 + 0 + 5 + 9 + 1 + 7 + 3 + 0 + 622 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7031592441225 + 21027580621056 = 2651715^2 + 4585584^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 28059173062281 - 2³ = 28059173062273 is a prime.

It is a super-2 number, since 2×28059173062281² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28059173062231) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15008425 + ... + 16774121.

Almost surely, 2^{28059173062281} is an apocalyptic number.

28059173062281 is the 5297091-st square number.

28059173062281 is the 2648546-th centered octagonal number.

It is an amenable number.

28059173062281 is a deficient number, since it is larger than the sum of its proper divisors (12470766537310).

28059173062281 is an frugal number, since it uses more digits than its factorization.

28059173062281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3531400 (or 1765700 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 28059173062281 in words is "twenty-eight trillion, fifty-nine billion, one hundred seventy-three million, sixty-two thousand, two hundred eighty-one".