28003454943 has 8 divisors (see below), whose sum is σ = 37343434800. Its totient is φ = 18666222528.

The previous prime is 28003454939. The next prime is 28003454981. The reversal of 28003454943 is 34945430082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28003454943 - 2² = 28003454939 is a prime.

It is a super-2 number, since 2×28003454943² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28003454895 and 28003454904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28003454923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 662958 + ... + 703931.

It is an arithmetic number, because the mean of its divisors is an integer number (4667929350).

Almost surely, 2^28003454943 is an apocalyptic number.

28003454943 is a deficient number, since it is larger than the sum of its proper divisors (9339979857).

28003454943 is a wasteful number, since it uses less digits than its factorization.

28003454943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373721.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 28003454943 in words is "twenty-eight billion, three million, four hundred fifty-four thousand, nine hundred forty-three".