28532887396 has 12 divisors (see below), whose sum is σ = 53773518652. Its totient is φ = 13169024928.

The previous prime is 28532887367. The next prime is 28532887421. The reversal of 28532887396 is 69378823582.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1895383296 + 26637504100 = 43536^2 + 163210^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 274354635 + ... + 274354738.

Almost surely, 2^28532887396 is an apocalyptic number.

28532887396 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28532887396 is a deficient number, since it is larger than the sum of its proper divisors (25240631256).

28532887396 is a wasteful number, since it uses less digits than its factorization.

28532887396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548709390 (or 548709388 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 61.

The spelling of 28532887396 in words is "twenty-eight billion, five hundred thirty-two million, eight hundred eighty-seven thousand, three hundred ninety-six".