28342284493 has 8 divisors (see below), whose sum is σ = 29320766712. Its totient is φ = 27374985216.

The previous prime is 28342284491. The next prime is 28342284499. The reversal of 28342284493 is 39448224382.

It can be written as a sum of positive squares in 4 ways, for example, as 5505936804 + 22836347689 = 74202^2 + 151117^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 28342284493 - 2¹ = 28342284491 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 (28342284491) 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, 2790580 + ... + 2800717.

It is an arithmetic number, because the mean of its divisors is an integer number (3665095839).

Almost surely, 2^28342284493 is an apocalyptic number.

It is an amenable number.

28342284493 is a deficient number, since it is larger than the sum of its proper divisors (978482219).

28342284493 is a wasteful number, since it uses less digits than its factorization.

28342284493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5591471.

The product of its digits is 2654208, while the sum is 49.

The spelling of 28342284493 in words is "twenty-eight billion, three hundred forty-two million, two hundred eighty-four thousand, four hundred ninety-three".