28539033 has 16 divisors (see below), whose sum is σ = 38884416. Its totient is φ = 18613440.

The previous prime is 28539031. The next prime is 28539037. The reversal of 28539033 is 33093582.

It is not a de Polignac number, because 28539033 - 2¹ = 28539031 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28538985 and 28539003.

It is not an unprimeable number, because it can be changed into a prime (28539031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50410 + ... + 50972.

It is an arithmetic number, because the mean of its divisors is an integer number (2430276).

Almost surely, 2^28539033 is an apocalyptic number.

It is an amenable number.

28539033 is a deficient number, since it is larger than the sum of its proper divisors (10345383).

28539033 is a wasteful number, since it uses less digits than its factorization.

28539033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 28539033 is about 5342.1936505522. The cubic root of 28539033 is about 305.5951221833.

The spelling of 28539033 in words is "twenty-eight million, five hundred thirty-nine thousand, thirty-three".