28023613138 has 8 divisors (see below), whose sum is σ = 42039752832. Its totient is φ = 14010362196.

The previous prime is 28023613091. The next prime is 28023613231. The reversal of 28023613138 is 83131632082.

28023613138 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 28023613097 and 28023613106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 697770 + ... + 736837.

It is an arithmetic number, because the mean of its divisors is an integer number (5254969104).

Almost surely, 2^28023613138 is an apocalyptic number.

28023613138 is a deficient number, since it is larger than the sum of its proper divisors (14016139694).

28023613138 is a wasteful number, since it uses less digits than its factorization.

28023613138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444376.

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 28023613138 in words is "twenty-eight billion, twenty-three million, six hundred thirteen thousand, one hundred thirty-eight".