28140159 has 16 divisors (see below), whose sum is σ = 39628800. Its totient is φ = 17712576.

The previous prime is 28140143. The next prime is 28140187. The reversal of 28140159 is 95104182.

It is a happy number.

It is not a de Polignac number, because 28140159 - 2⁴ = 28140143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28140139) 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, 21187 + ... + 22475.

It is an arithmetic number, because the mean of its divisors is an integer number (2476800).

Almost surely, 2^28140159 is an apocalyptic number.

28140159 is a deficient number, since it is larger than the sum of its proper divisors (11488641).

28140159 is a wasteful number, since it uses less digits than its factorization.

28140159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1694.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 28140159 is about 5304.7298705966. The cubic root of 28140159 is about 304.1647270617.

The spelling of 28140159 in words is "twenty-eight million, one hundred forty thousand, one hundred fifty-nine".