28131328335 has 32 divisors (see below), whose sum is σ = 49110124032. Its totient is φ = 13637162880.

The previous prime is 28131328333. The next prime is 28131328339. The reversal of 28131328335 is 53382313182.

It is not a de Polignac number, because 28131328335 - 2¹ = 28131328333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28131328293 and 28131328302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28131328333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1416897 + ... + 1436613.

It is an arithmetic number, because the mean of its divisors is an integer number (1534691376).

Almost surely, 2^28131328335 is an apocalyptic number.

28131328335 is a deficient number, since it is larger than the sum of its proper divisors (20978795697).

28131328335 is a wasteful number, since it uses less digits than its factorization.

28131328335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28383.

The product of its digits is 103680, while the sum is 39.

The spelling of 28131328335 in words is "twenty-eight billion, one hundred thirty-one million, three hundred twenty-eight thousand, three hundred thirty-five".