28894666938 has 8 divisors (see below), whose sum is σ = 57789333888. Its totient is φ = 9631555644.

The previous prime is 28894666919. The next prime is 28894666939. The reversal of 28894666938 is 83966649882.

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

28894666938 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (28894666939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2407888906 + ... + 2407888917.

It is an arithmetic number, because the mean of its divisors is an integer number (7223666736).

Almost surely, 2^28894666938 is an apocalyptic number.

28894666938 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28894666938 is a wasteful number, since it uses less digits than its factorization.

28894666938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4815777828.

The product of its digits is 214990848, while the sum is 69.

The spelling of 28894666938 in words is "twenty-eight billion, eight hundred ninety-four million, six hundred sixty-six thousand, nine hundred thirty-eight".