28831257707 has 8 divisors (see below), whose sum is σ = 33003244800. Its totient is φ = 24672579624.

The previous prime is 28831257683. The next prime is 28831257727. The reversal of 28831257707 is 70775213882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-28831257707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28831257727) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3322607 + ... + 3331272.

It is an arithmetic number, because the mean of its divisors is an integer number (4125405600).

Almost surely, 2^28831257707 is an apocalyptic number.

28831257707 is a deficient number, since it is larger than the sum of its proper divisors (4171987093).

28831257707 is an equidigital number, since it uses as much as digits as its factorization.

28831257707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6654505.

The product of its (nonzero) digits is 1317120, while the sum is 50.

The spelling of 28831257707 in words is "twenty-eight billion, eight hundred thirty-one million, two hundred fifty-seven thousand, seven hundred seven".