28083348057 has 4 divisors (see below), whose sum is σ = 37444464080. Its totient is φ = 18722232036.

The previous prime is 28083348037. The next prime is 28083348061. The reversal of 28083348057 is 75084338082.

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 28083348057 - 2¹² = 28083343961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28083347997 and 28083348015.

It is not an unprimeable number, because it can be changed into a prime (28083348017) 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, 4680558007 + ... + 4680558012.

It is an arithmetic number, because the mean of its divisors is an integer number (9361116020).

Almost surely, 2^28083348057 is an apocalyptic number.

It is an amenable number.

28083348057 is a deficient number, since it is larger than the sum of its proper divisors (9361116023).

28083348057 is an equidigital number, since it uses as much as digits as its factorization.

28083348057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9361116022.

The product of its (nonzero) digits is 1290240, while the sum is 48.

The spelling of 28083348057 in words is "twenty-eight billion, eighty-three million, three hundred forty-eight thousand, fifty-seven".