28776281732 has 36 divisors (see below), whose sum is σ = 57428979216. Its totient is φ = 12511416720.

The previous prime is 28776281731. The next prime is 28776281759. The reversal of 28776281732 is 23718267782.

It is not an unprimeable number, because it can be changed into a prime (28776281731) 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, 594878 + ... + 641429.

Almost surely, 2^28776281732 is an apocalyptic number.

28776281732 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28776281732 is a deficient number, since it is larger than the sum of its proper divisors (28652697484).

28776281732 is a wasteful number, since it uses less digits than its factorization.

28776281732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236368 (or 1236343 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 53.

The spelling of 28776281732 in words is "twenty-eight billion, seven hundred seventy-six million, two hundred eighty-one thousand, seven hundred thirty-two".