28059551858 has 16 divisors (see below), whose sum is σ = 47993261400. Its totient is φ = 12188764416.

The previous prime is 28059551857. The next prime is 28059551869. The reversal of 28059551858 is 85815595082.

It can be written as a sum of positive squares in 4 ways, for example, as 27013223449 + 1046328409 = 164357^2 + 32347^2 .

It is not an unprimeable number, because it can be changed into a prime (28059551851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31741133 + ... + 31742016.

Almost surely, 2^28059551858 is an apocalyptic number.

28059551858 is a deficient number, since it is larger than the sum of its proper divisors (19933709542).

28059551858 is a wasteful number, since it uses less digits than its factorization.

28059551858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63483181.

The product of its (nonzero) digits is 5760000, while the sum is 56.

The spelling of 28059551858 in words is "twenty-eight billion, fifty-nine million, five hundred fifty-one thousand, eight hundred fifty-eight".