28119138 has 8 divisors (see below), whose sum is σ = 56238288. Its totient is φ = 9373044.

The previous prime is 28119127. The next prime is 28119151. The reversal of 28119138 is 83191182.

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

28119138 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28119099 and 28119108.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2343256 + ... + 2343267.

It is an arithmetic number, because the mean of its divisors is an integer number (7029786).

Almost surely, 2^28119138 is an apocalyptic number.

28119138 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.

28119138 is a wasteful number, since it uses less digits than its factorization.

28119138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4686528.

The product of its digits is 3456, while the sum is 33.

The square root of 28119138 is about 5302.7481554379. The cubic root of 28119138 is about 304.0889700925.

The spelling of 28119138 in words is "twenty-eight million, one hundred nineteen thousand, one hundred thirty-eight".