28190159 has 4 divisors (see below), whose sum is σ = 28336416. Its totient is φ = 28043904.

The previous prime is 28190147. The next prime is 28190161. The reversal of 28190159 is 95109182.

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 28190159 - 2²⁴ = 11412943 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 (28190179) 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, 72839 + ... + 73224.

It is an arithmetic number, because the mean of its divisors is an integer number (7084104).

Almost surely, 2^28190159 is an apocalyptic number.

28190159 is a deficient number, since it is larger than the sum of its proper divisors (146257).

28190159 is a wasteful number, since it uses less digits than its factorization.

28190159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146256.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 28190159 is about 5309.4405543334. The cubic root of 28190159 is about 304.3447691361.

The spelling of 28190159 in words is "twenty-eight million, one hundred ninety thousand, one hundred fifty-nine".