28347038943 has 16 divisors (see below), whose sum is σ = 40042699776. Its totient is φ = 17775999360.

The previous prime is 28347038939. The next prime is 28347038957. The reversal of 28347038943 is 34983074382.

It is not a de Polignac number, because 28347038943 - 2² = 28347038939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28347038443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73423 + ... + 249168.

It is an arithmetic number, because the mean of its divisors is an integer number (2502668736).

Almost surely, 2^28347038943 is an apocalyptic number.

28347038943 is a deficient number, since it is larger than the sum of its proper divisors (11695660833).

28347038943 is a wasteful number, since it uses less digits than its factorization.

28347038943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324334.

The product of its (nonzero) digits is 3483648, while the sum is 51.

The spelling of 28347038943 in words is "twenty-eight billion, three hundred forty-seven million, thirty-eight thousand, nine hundred forty-three".