28131248073 has 8 divisors (see below), whose sum is σ = 38801721600. Its totient is φ = 18107469968.

The previous prime is 28131248069. The next prime is 28131248077. The reversal of 28131248073 is 37084213182.

It is an interprime number because it is at equal distance from previous prime (28131248069) and next prime (28131248077).

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

It is a cyclic number.

It is not a de Polignac number, because 28131248073 - 2² = 28131248069 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28131248077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161673753 + ... + 161673926.

It is an arithmetic number, because the mean of its divisors is an integer number (4850215200).

Almost surely, 2^28131248073 is an apocalyptic number.

It is an amenable number.

28131248073 is a deficient number, since it is larger than the sum of its proper divisors (10670473527).

28131248073 is a wasteful number, since it uses less digits than its factorization.

28131248073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323347711.

The product of its (nonzero) digits is 64512, while the sum is 39.

The spelling of 28131248073 in words is "twenty-eight billion, one hundred thirty-one million, two hundred forty-eight thousand, seventy-three".