28128232486 has 16 divisors (see below), whose sum is σ = 42337641024. Its totient is φ = 14015764224.

The previous prime is 28128232417. The next prime is 28128232493. The reversal of 28128232486 is 68423282182.

It is a congruent number.

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, 718966 + ... + 757078.

It is an arithmetic number, because the mean of its divisors is an integer number (2646102564).

Almost surely, 2^28128232486 is an apocalyptic number.

28128232486 is a deficient number, since it is larger than the sum of its proper divisors (14209408538).

28128232486 is a wasteful number, since it uses less digits than its factorization.

28128232486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39375.

The product of its digits is 589824, while the sum is 46.

The spelling of 28128232486 in words is "twenty-eight billion, one hundred twenty-eight million, two hundred thirty-two thousand, four hundred eighty-six".