28776662576872 has 32 divisors (see below), whose sum is σ = 61665656713920. Its totient is φ = 12332579437440.

The previous prime is 28776662576861. The next prime is 28776662576903. The reversal of 28776662576872 is 27867526667782.

It is a junction number, because it is equal to n+sod(n) for n = 28776662576792 and 28776662576801.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3214029 + ... + 8239132.

It is an arithmetic number, because the mean of its divisors is an integer number (1927051772310).

Almost surely, 2^{28776662576872} is an apocalyptic number.

It is an amenable number.

28776662576872 is an abundant number, since it is smaller than the sum of its proper divisors (32888994137048).

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

28776662576872 is a wasteful number, since it uses less digits than its factorization.

28776662576872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11498041 (or 11498037 counting only the distinct ones).

The product of its digits is 7965941760, while the sum is 79.

The spelling of 28776662576872 in words is "twenty-eight trillion, seven hundred seventy-six billion, six hundred sixty-two million, five hundred seventy-six thousand, eight hundred seventy-two".