28471007208293 has 4 divisors (see below), whose sum is σ = 30661084685868. Its totient is φ = 26280929730720.

The previous prime is 28471007208271. The next prime is 28471007208299. The reversal of 28471007208293 is 39280270017482.

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 9737501527009 + 18733505681284 = 3120497^2 + 4328222^2 .

It is a cyclic number.

It is not a de Polignac number, because 28471007208293 - 2⁸ = 28471007208037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28471007208299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1095038738768 + ... + 1095038738793.

It is an arithmetic number, because the mean of its divisors is an integer number (7665271171467).

Almost surely, 2^{28471007208293} is an apocalyptic number.

It is an amenable number.

28471007208293 is a deficient number, since it is larger than the sum of its proper divisors (2190077477575).

28471007208293 is a wasteful number, since it uses less digits than its factorization.

28471007208293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2190077477574.

The product of its (nonzero) digits is 2709504, while the sum is 53.

The spelling of 28471007208293 in words is "twenty-eight trillion, four hundred seventy-one billion, seven million, two hundred eight thousand, two hundred ninety-three".