28533039 has 8 divisors (see below), whose sum is σ = 38393520. Its totient is φ = 18847296.

The previous prime is 28533017. The next prime is 28533047. The reversal of 28533039 is 93033582.

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

It is not a de Polignac number, because 28533039 - 2⁹ = 28532527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28533059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43302 + ... + 43955.

It is an arithmetic number, because the mean of its divisors is an integer number (4799190).

Almost surely, 2^28533039 is an apocalyptic number.

28533039 is a deficient number, since it is larger than the sum of its proper divisors (9860481).

28533039 is a wasteful number, since it uses less digits than its factorization.

28533039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87369.

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

The square root of 28533039 is about 5341.6326155961. The cubic root of 28533039 is about 305.5737261603.

The spelling of 28533039 in words is "twenty-eight million, five hundred thirty-three thousand, thirty-nine".