28975331473 has 4 divisors (see below), whose sum is σ = 31609452528. Its totient is φ = 26341210420.

The previous prime is 28975331453. The next prime is 28975331501. The reversal of 28975331473 is 37413357982.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28975331473 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28975331473.

It is not an unprimeable number, because it can be changed into a prime (28975331423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1317060511 + ... + 1317060532.

It is an arithmetic number, because the mean of its divisors is an integer number (7902363132).

Almost surely, 2^28975331473 is an apocalyptic number.

It is an amenable number.

28975331473 is a deficient number, since it is larger than the sum of its proper divisors (2634121055).

28975331473 is a wasteful number, since it uses less digits than its factorization.

28975331473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2634121054.

The product of its digits is 3810240, while the sum is 52.

The spelling of 28975331473 in words is "twenty-eight billion, nine hundred seventy-five million, three hundred thirty-one thousand, four hundred seventy-three".