28916316357293 has 4 divisors (see below), whose sum is σ = 28928400068988. Its totient is φ = 28904232645600.

The previous prime is 28916316357283. The next prime is 28916316357323. The reversal of 28916316357293 is 39275361361982.

It is a happy number.

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 882288247204 + 28034028110089 = 939302^2 + 5294717^2 .

It is a cyclic number.

It is not a de Polignac number, because 28916316357293 - 2⁸ = 28916316357037 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 (28916316357283) 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, 6041852258 + ... + 6041857043.

It is an arithmetic number, because the mean of its divisors is an integer number (7232100017247).

Almost surely, 2^{28916316357293} is an apocalyptic number.

It is an amenable number.

28916316357293 is a deficient number, since it is larger than the sum of its proper divisors (12083711695).

28916316357293 is a wasteful number, since it uses less digits than its factorization.

28916316357293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12083711694.

The product of its digits is 88179840, while the sum is 65.

The spelling of 28916316357293 in words is "twenty-eight trillion, nine hundred sixteen billion, three hundred sixteen million, three hundred fifty-seven thousand, two hundred ninety-three".