28375039 has 8 divisors (see below), whose sum is σ = 35376768. Its totient is φ = 22110360.

The previous prime is 28375019. The next prime is 28375051. The reversal of 28375039 is 93057382.

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

It is a cyclic number.

It is not a de Polignac number, because 28375039 - 2¹⁵ = 28342271 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28374989 and 28375007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28375019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184177 + ... + 184330.

It is an arithmetic number, because the mean of its divisors is an integer number (4422096).

Almost surely, 2^28375039 is an apocalyptic number.

28375039 is a deficient number, since it is larger than the sum of its proper divisors (7001729).

28375039 is a wasteful number, since it uses less digits than its factorization.

28375039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368525.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 28375039 is about 5326.8225988858. The cubic root of 28375039 is about 305.0086497592.

The spelling of 28375039 in words is "twenty-eight million, three hundred seventy-five thousand, thirty-nine".