28348089703 has 4 divisors (see below), whose sum is σ = 28348714240. Its totient is φ = 28347465168.

The previous prime is 28348089691. The next prime is 28348089709. The reversal of 28348089703 is 30798084382.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28348089703 - 2¹⁷ = 28347958631 is a prime.

It is a super-2 number, since 2×28348089703² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28348089709) 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, 238350 + ... + 336907.

It is an arithmetic number, because the mean of its divisors is an integer number (7087178560).

Almost surely, 2^28348089703 is an apocalyptic number.

28348089703 is a deficient number, since it is larger than the sum of its proper divisors (624537).

28348089703 is an equidigital number, since it uses as much as digits as its factorization.

28348089703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624536.

The product of its (nonzero) digits is 2322432, while the sum is 52.

The spelling of 28348089703 in words is "twenty-eight billion, three hundred forty-eight million, eighty-nine thousand, seven hundred three".