28789266275 has 48 divisors (see below), whose sum is σ = 44581432320. Its totient is φ = 17916729600.

The previous prime is 28789266269. The next prime is 28789266277. The reversal of 28789266275 is 57266298782.

It is a Cunningham number, because it is equal to 169674²-1.

It is not a de Polignac number, because 28789266275 - 2¹⁰ = 28789265251 is a prime.

It is a super-3 number, since 3×28789266275³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (28789266277) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1175606 + ... + 1199844.

It is an arithmetic number, because the mean of its divisors is an integer number (928779840).

Almost surely, 2^28789266275 is an apocalyptic number.

28789266275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28789266275 is a deficient number, since it is larger than the sum of its proper divisors (15792166045).

28789266275 is a wasteful number, since it uses less digits than its factorization.

28789266275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24884 (or 24879 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 62.

The spelling of 28789266275 in words is "twenty-eight billion, seven hundred eighty-nine million, two hundred sixty-six thousand, two hundred seventy-five".