28969584073 has 4 divisors (see below), whose sum is σ = 28977957828. Its totient is φ = 28961210320.

The previous prime is 28969584071. The next prime is 28969584101. The reversal of 28969584073 is 37048596982.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2319674569 + 26649909504 = 48163^2 + 163248^2 .

It is a cyclic number.

It is not a de Polignac number, because 28969584073 - 2¹ = 28969584071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28969584071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4181686 + ... + 4188607.

It is an arithmetic number, because the mean of its divisors is an integer number (7244489457).

Almost surely, 2^28969584073 is an apocalyptic number.

It is an amenable number.

28969584073 is a deficient number, since it is larger than the sum of its proper divisors (8373755).

28969584073 is an equidigital number, since it uses as much as digits as its factorization.

28969584073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8373754.

The product of its (nonzero) digits is 26127360, while the sum is 61.

The spelling of 28969584073 in words is "twenty-eight billion, nine hundred sixty-nine million, five hundred eighty-four thousand, seventy-three".