28038 has 8 divisors (see below), whose sum is σ = 56088. Its totient is φ = 9344.

The previous prime is 28031. The next prime is 28051. The reversal of 28038 is 83082.

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

28038 is an admirable number.

It is a super-2 number, since 2×28038² = 1572258888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28031) 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, 2331 + ... + 2342.

It is an arithmetic number, because the mean of its divisors is an integer number (7011).

2²⁸⁰³⁸ is an apocalyptic number.

28038 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.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28044).

28038 is a wasteful number, since it uses less digits than its factorization.

28038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4678.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 28038 is about 167.4455135260. The cubic root of 28038 is about 30.3796204592.

The spelling of 28038 in words is "twenty-eight thousand, thirty-eight".