28292319361 has 4 divisors (see below), whose sum is σ = 28292702724. Its totient is φ = 28291936000.

The previous prime is 28292319347. The next prime is 28292319401. The reversal of 28292319361 is 16391329282.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16391329282 = 2 ⋅8195664641.

It can be written as a sum of positive squares in 2 ways, for example, as 13588331761 + 14703987600 = 116569^2 + 121260^2 .

It is a cyclic number.

It is not a de Polignac number, because 28292319361 - 2⁹ = 28292318849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28292319331) 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, 42040 + ... + 241561.

It is an arithmetic number, because the mean of its divisors is an integer number (7073175681).

Almost surely, 2^28292319361 is an apocalyptic number.

It is an amenable number.

28292319361 is a deficient number, since it is larger than the sum of its proper divisors (383363).

28292319361 is an equidigital number, since it uses as much as digits as its factorization.

28292319361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383362.

The product of its digits is 279936, while the sum is 46.

The spelling of 28292319361 in words is "twenty-eight billion, two hundred ninety-two million, three hundred nineteen thousand, three hundred sixty-one".