28379411593 has 8 divisors (see below), whose sum is σ = 30575531336. Its totient is φ = 26185161600.

The previous prime is 28379411581. The next prime is 28379411597. The reversal of 28379411593 is 39511497382.

It can be written as a sum of positive squares in 4 ways, for example, as 9858106944 + 18521304649 = 99288^2 + 136093^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28379411593 - 2¹³ = 28379403401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28379411593.

It is not an unprimeable number, because it can be changed into a prime (28379411597) 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, 435828 + ... + 496693.

It is an arithmetic number, because the mean of its divisors is an integer number (3821941417).

Almost surely, 2^28379411593 is an apocalyptic number.

It is an amenable number.

28379411593 is a deficient number, since it is larger than the sum of its proper divisors (2196119743).

28379411593 is a wasteful number, since it uses less digits than its factorization.

28379411593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934875.

The product of its digits is 1632960, while the sum is 52.

The spelling of 28379411593 in words is "twenty-eight billion, three hundred seventy-nine million, four hundred eleven thousand, five hundred ninety-three".