28539007 has 16 divisors (see below), whose sum is σ = 34732800. Its totient is φ = 22904640.

The previous prime is 28539001. The next prime is 28539019. The reversal of 28539007 is 70093582.

It is a cyclic number.

It is not a de Polignac number, because 28539007 - 2³ = 28538999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28539001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10632 + ... + 13042.

It is an arithmetic number, because the mean of its divisors is an integer number (2170800).

Almost surely, 2^28539007 is an apocalyptic number.

28539007 is a deficient number, since it is larger than the sum of its proper divisors (6193793).

28539007 is a wasteful number, since it uses less digits than its factorization.

28539007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2526.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 28539007 is about 5342.1912170943. The cubic root of 28539007 is about 305.5950293808.

The spelling of 28539007 in words is "twenty-eight million, five hundred thirty-nine thousand, seven".