28512059 has 4 divisors (see below), whose sum is σ = 28526904. Its totient is φ = 28497216.

The previous prime is 28512049. The next prime is 28512067. The reversal of 28512059 is 95021582.

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

It is a cyclic number.

It is not a de Polignac number, because 28512059 - 2²⁴ = 11734843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28512049) 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, 4022 + ... + 8555.

It is an arithmetic number, because the mean of its divisors is an integer number (7131726).

Almost surely, 2^28512059 is an apocalyptic number.

28512059 is a deficient number, since it is larger than the sum of its proper divisors (14845).

28512059 is a wasteful number, since it uses less digits than its factorization.

28512059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14844.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 28512059 is about 5339.6684353993. The cubic root of 28512059 is about 305.4988129026.

The spelling of 28512059 in words is "twenty-eight million, five hundred twelve thousand, fifty-nine".