28108232215528 has 16 divisors (see below), whose sum is σ = 52703702789760. Its totient is φ = 14053911471600.

The previous prime is 28108232215519. The next prime is 28108232215541. The reversal of 28108232215528 is 82551223280182.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24994968 + ... + 26095303.

It is an arithmetic number, because the mean of its divisors is an integer number (3293981424360).

Almost surely, 2^{28108232215528} is an apocalyptic number.

It is an amenable number.

28108232215528 is a deficient number, since it is larger than the sum of its proper divisors (24595470574232).

28108232215528 is a wasteful number, since it uses less digits than its factorization.

28108232215528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51159048 (or 51159044 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 49.

The spelling of 28108232215528 in words is "twenty-eight trillion, one hundred eight billion, two hundred thirty-two million, two hundred fifteen thousand, five hundred twenty-eight".