28321423288 has 32 divisors (see below), whose sum is σ = 53216064000. Its totient is φ = 14130512352.

The previous prime is 28321423283. The next prime is 28321423307. The reversal of 28321423288 is 88232412382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28321423283) 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, 11804313 + ... + 11806711.

It is an arithmetic number, because the mean of its divisors is an integer number (1663002000).

Almost surely, 2^28321423288 is an apocalyptic number.

It is an amenable number.

28321423288 is a deficient number, since it is larger than the sum of its proper divisors (24894640712).

28321423288 is a wasteful number, since it uses less digits than its factorization.

28321423288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4939 (or 4935 counting only the distinct ones).

The product of its digits is 294912, while the sum is 43.

The spelling of 28321423288 in words is "twenty-eight billion, three hundred twenty-one million, four hundred twenty-three thousand, two hundred eighty-eight".