28071294583 has 4 divisors (see below), whose sum is σ = 29548731160. Its totient is φ = 26593858008.

The previous prime is 28071294571. The next prime is 28071294599. The reversal of 28071294583 is 38549217082.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28071294583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28071295583) 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, 738718260 + ... + 738718297.

It is an arithmetic number, because the mean of its divisors is an integer number (7387182790).

Almost surely, 2^28071294583 is an apocalyptic number.

28071294583 is a deficient number, since it is larger than the sum of its proper divisors (1477436577).

28071294583 is a wasteful number, since it uses less digits than its factorization.

28071294583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477436576.

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 28071294583 in words is "twenty-eight billion, seventy-one million, two hundred ninety-four thousand, five hundred eighty-three".