28054433939 has 8 divisors (see below), whose sum is σ = 32063466240. Its totient is φ = 24045715656.

The previous prime is 28054433921. The next prime is 28054433941. The reversal of 28054433939 is 93933445082.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28054433939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28054433959) 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, 162122 + ... + 287040.

It is an arithmetic number, because the mean of its divisors is an integer number (4007933280).

Almost surely, 2^28054433939 is an apocalyptic number.

28054433939 is a deficient number, since it is larger than the sum of its proper divisors (4009032301).

28054433939 is a wasteful number, since it uses less digits than its factorization.

28054433939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157009.

The product of its (nonzero) digits is 2799360, while the sum is 50.

The spelling of 28054433939 in words is "twenty-eight billion, fifty-four million, four hundred thirty-three thousand, nine hundred thirty-nine".