28347883 has 6 divisors (see below), whose sum is σ = 29136156. Its totient is φ = 27580392.

The previous prime is 28347863. The next prime is 28347899. The reversal of 28347883 is 38874382.

It is a de Polignac number, because none of the positive numbers 2^k-28347883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28347853) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8985 + ... + 11722.

It is an arithmetic number, because the mean of its divisors is an integer number (4856026).

Almost surely, 2^28347883 is an apocalyptic number.

28347883 is a deficient number, since it is larger than the sum of its proper divisors (788273).

28347883 is an equidigital number, since it uses as much as digits as its factorization.

28347883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20781 (or 20744 counting only the distinct ones).

The product of its digits is 258048, while the sum is 43.

The square root of 28347883 is about 5324.2730020163. The cubic root of 28347883 is about 304.9113170457.

The spelling of 28347883 in words is "twenty-eight million, three hundred forty-seven thousand, eight hundred eighty-three".