28585348293 has 4 divisors (see below), whose sum is σ = 38113797728. Its totient is φ = 19056898860.

The previous prime is 28585348289. The next prime is 28585348301. The reversal of 28585348293 is 39284358582.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 28585348293 - 2² = 28585348289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28585348213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4764224713 + ... + 4764224718.

It is an arithmetic number, because the mean of its divisors is an integer number (9528449432).

Almost surely, 2^28585348293 is an apocalyptic number.

It is an amenable number.

28585348293 is a deficient number, since it is larger than the sum of its proper divisors (9528449435).

28585348293 is an equidigital number, since it uses as much as digits as its factorization.

28585348293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9528449434.

The product of its digits is 16588800, while the sum is 57.

The spelling of 28585348293 in words is "twenty-eight billion, five hundred eighty-five million, three hundred forty-eight thousand, two hundred ninety-three".