28931744017623 has 8 divisors (see below), whose sum is σ = 38575711889136. Its totient is φ = 19287802745600.

The previous prime is 28931744017591. The next prime is 28931744017643. The reversal of 28931744017623 is 32671044713982.

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 28931744017623 - 2⁵ = 28931744017591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28931744017643) 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, 3956058 + ... + 8574023.

It is an arithmetic number, because the mean of its divisors is an integer number (4821963986142).

Almost surely, 2^{28931744017623} is an apocalyptic number.

28931744017623 is a deficient number, since it is larger than the sum of its proper divisors (9643967871513).

28931744017623 is a wasteful number, since it uses less digits than its factorization.

28931744017623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13299745.

The product of its (nonzero) digits is 12192768, while the sum is 57.

The spelling of 28931744017623 in words is "twenty-eight trillion, nine hundred thirty-one billion, seven hundred forty-four million, seventeen thousand, six hundred twenty-three".