28943433994 has 8 divisors (see below), whose sum is σ = 43417754208. Its totient is φ = 14470849260.

The previous prime is 28943433983. The next prime is 28943434007. The reversal of 28943433994 is 49933434982.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391342 + ... + 459385.

It is an arithmetic number, because the mean of its divisors is an integer number (5427219276).

Almost surely, 2^28943433994 is an apocalyptic number.

28943433994 is a deficient number, since it is larger than the sum of its proper divisors (14474320214).

28943433994 is a wasteful number, since it uses less digits than its factorization.

28943433994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867740.

The product of its digits is 20155392, while the sum is 58.

The spelling of 28943433994 in words is "twenty-eight billion, nine hundred forty-three million, four hundred thirty-three thousand, nine hundred ninety-four".