28840331003 has 12 divisors (see below), whose sum is σ = 33565268520. Its totient is φ = 24676217280.

The previous prime is 28840330997. The next prime is 28840331011. The reversal of 28840331003 is 30013304882.

It is a happy number.

It is not a de Polignac number, because 28840331003 - 2²² = 28836136699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28840331033) 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 11 ways as a sum of consecutive naturals, for example, 7008233 + ... + 7012346.

It is an arithmetic number, because the mean of its divisors is an integer number (2797105710).

Almost surely, 2^28840331003 is an apocalyptic number.

28840331003 is a deficient number, since it is larger than the sum of its proper divisors (4724937517).

28840331003 is a wasteful number, since it uses less digits than its factorization.

28840331003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14020618 (or 14020607 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 28840331003 its reverse (30013304882), we get a palindrome (58853635885).

The spelling of 28840331003 in words is "twenty-eight billion, eight hundred forty million, three hundred thirty-one thousand, three".