28143059 has 16 divisors (see below), whose sum is σ = 33143040. Its totient is φ = 23399520.

The previous prime is 28143013. The next prime is 28143061. The reversal of 28143059 is 95034182.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28143059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28143259) 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, 33869 + ... + 34689.

It is an arithmetic number, because the mean of its divisors is an integer number (2071440).

Almost surely, 2^28143059 is an apocalyptic number.

28143059 is a deficient number, since it is larger than the sum of its proper divisors (4999981).

28143059 is an equidigital number, since it uses as much as digits as its factorization.

28143059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 28143059 is about 5305.0032045231. The cubic root of 28143059 is about 304.1751753255.

The spelling of 28143059 in words is "twenty-eight million, one hundred forty-three thousand, fifty-nine".