28056284618 has 16 divisors (see below), whose sum is σ = 42744852360. Its totient is φ = 13808756736.

The previous prime is 28056284591. The next prime is 28056284647. The reversal of 28056284618 is 81648265082.

It can be written as a sum of positive squares in 4 ways, for example, as 27699943489 + 356341129 = 166433^2 + 18877^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114455 + ... + 263082.

Almost surely, 2^28056284618 is an apocalyptic number.

28056284618 is a deficient number, since it is larger than the sum of its proper divisors (14688567742).

28056284618 is a wasteful number, since it uses less digits than its factorization.

28056284618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378121.

The product of its (nonzero) digits is 1474560, while the sum is 50.

The spelling of 28056284618 in words is "twenty-eight billion, fifty-six million, two hundred eighty-four thousand, six hundred eighteen".