28870651275 has 24 divisors (see below), whose sum is σ = 47738288304. Its totient is φ = 15395913600.

The previous prime is 28870651267. The next prime is 28870651339. The reversal of 28870651275 is 57215607882.

It is not a de Polignac number, because 28870651275 - 2³ = 28870651267 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 879457 + ... + 911693.

It is an arithmetic number, because the mean of its divisors is an integer number (1989095346).

Almost surely, 2^28870651275 is an apocalyptic number.

28870651275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28870651275 is a deficient number, since it is larger than the sum of its proper divisors (18867637029).

28870651275 is a wasteful number, since it uses less digits than its factorization.

28870651275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44191 (or 44186 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 51.

The spelling of 28870651275 in words is "twenty-eight billion, eight hundred seventy million, six hundred fifty-one thousand, two hundred seventy-five".