28665234675 has 144 divisors (see below), whose sum is σ = 67777661952. Its totient is φ = 11211955200.

The previous prime is 28665234671. The next prime is 28665234677. The reversal of 28665234675 is 57643256682.

28665234675 is a `hidden beast` number, since 2 + 8 + 6 + 6 + 523 + 46 + 75 = 666.

It is not a de Polignac number, because 28665234675 - 2² = 28665234671 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28665234671) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 245862 + ... + 343188.

It is an arithmetic number, because the mean of its divisors is an integer number (470678208).

Almost surely, 2^28665234675 is an apocalyptic number.

28665234675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28665234675 is an abundant number, since it is smaller than the sum of its proper divisors (39112427277).

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

28665234675 is a wasteful number, since it uses less digits than its factorization.

28665234675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97378 (or 97370 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 54.

The spelling of 28665234675 in words is "twenty-eight billion, six hundred sixty-five million, two hundred thirty-four thousand, six hundred seventy-five".