28440018576 has 60 divisors (see below), whose sum is σ = 79604299840. Its totient is φ = 9478607040.

The previous prime is 28440018571. The next prime is 28440018589. The reversal of 28440018576 is 67581004482.

28440018576 is a `hidden beast` number, since 28 + 4 + 40 + 0 + 18 + 576 = 666.

It is not an unprimeable number, because it can be changed into a prime (28440018571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1533165 + ... + 1551603.

Almost surely, 2^28440018576 is an apocalyptic number.

It is an amenable number.

28440018576 is an abundant number, since it is smaller than the sum of its proper divisors (51164281264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28440018576 is a wasteful number, since it uses less digits than its factorization.

28440018576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29164 (or 29155 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 28440018576 in words is "twenty-eight billion, four hundred forty million, eighteen thousand, five hundred seventy-six".