28934409233 has 4 divisors (see below), whose sum is σ = 28935590208. Its totient is φ = 28933228260.

The previous prime is 28934409181. The next prime is 28934409253. The reversal of 28934409233 is 33290443982.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28934409233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28934409253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 552941 + ... + 603002.

It is an arithmetic number, because the mean of its divisors is an integer number (7233897552).

Almost surely, 2^28934409233 is an apocalyptic number.

It is an amenable number.

28934409233 is a deficient number, since it is larger than the sum of its proper divisors (1180975).

28934409233 is a wasteful number, since it uses less digits than its factorization.

28934409233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180974.

The product of its (nonzero) digits is 1119744, while the sum is 47.

The spelling of 28934409233 in words is "twenty-eight billion, nine hundred thirty-four million, four hundred nine thousand, two hundred thirty-three".