28538067 has 4 divisors (see below), whose sum is σ = 38050760. Its totient is φ = 19025376.

The previous prime is 28538033. The next prime is 28538093. The reversal of 28538067 is 76083582.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 28538067 - 2¹¹ = 28536019 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (28538017) 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, 4756342 + ... + 4756347.

It is an arithmetic number, because the mean of its divisors is an integer number (9512690).

Almost surely, 2^28538067 is an apocalyptic number.

28538067 is a deficient number, since it is larger than the sum of its proper divisors (9512693).

28538067 is an equidigital number, since it uses as much as digits as its factorization.

28538067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9512692.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 28538067 is about 5342.1032374899. The cubic root of 28538067 is about 305.5916741779.

The spelling of 28538067 in words is "twenty-eight million, five hundred thirty-eight thousand, sixty-seven".