28399973024 has 12 divisors (see below), whose sum is σ = 55912446954. Its totient is φ = 14199986496.

The previous prime is 28399973023. The next prime is 28399973039. The reversal of 28399973024 is 42037999382.

It can be written as a sum of positive squares in only one way, i.e., 18243364624 + 10156608400 = 135068^2 + 100780^2 .

It is not an unprimeable number, because it can be changed into a prime (28399973023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 443749547 + ... + 443749610.

Almost surely, 2^28399973024 is an apocalyptic number.

It is an amenable number.

28399973024 is a deficient number, since it is larger than the sum of its proper divisors (27512473930).

28399973024 is an equidigital number, since it uses as much as digits as its factorization.

28399973024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887499167 (or 887499159 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 56.

The spelling of 28399973024 in words is "twenty-eight billion, three hundred ninety-nine million, nine hundred seventy-three thousand, twenty-four".