28997703875 has 24 divisors (see below), whose sum is σ = 42097573440. Its totient is φ = 19884135600.

The previous prime is 28997703857. The next prime is 28997703877. The reversal of 28997703875 is 57830779982.

It is not a de Polignac number, because 28997703875 - 2¹⁶ = 28997638339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28997703877) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2361035 + ... + 2373284.

It is an arithmetic number, because the mean of its divisors is an integer number (1754065560).

Almost surely, 2^28997703875 is an apocalyptic number.

28997703875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28997703875 is a deficient number, since it is larger than the sum of its proper divisors (13099869565).

28997703875 is an equidigital number, since it uses as much as digits as its factorization.

28997703875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4734348 (or 4734331 counting only the distinct ones).

The product of its (nonzero) digits is 53343360, while the sum is 65.

The spelling of 28997703875 in words is "twenty-eight billion, nine hundred ninety-seven million, seven hundred three thousand, eight hundred seventy-five".