28047021338 has 8 divisors (see below), whose sum is σ = 48080608032. Its totient is φ = 12020151996.

The previous prime is 28047021259. The next prime is 28047021341. The reversal of 28047021338 is 83312074082.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1001679320 + ... + 1001679347.

It is an arithmetic number, because the mean of its divisors is an integer number (6010076004).

Almost surely, 2^28047021338 is an apocalyptic number.

28047021338 is a deficient number, since it is larger than the sum of its proper divisors (20033586694).

28047021338 is a wasteful number, since it uses less digits than its factorization.

28047021338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003358676.

The product of its (nonzero) digits is 64512, while the sum is 38.

The spelling of 28047021338 in words is "twenty-eight billion, forty-seven million, twenty-one thousand, three hundred thirty-eight".