28955159 has 4 divisors (see below), whose sum is σ = 29321760. Its totient is φ = 28588560.

The previous prime is 28955141. The next prime is 28955167. The reversal of 28955159 is 95155982.

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 28955159 - 2⁸ = 28954903 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 (28955359) 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, 183182 + ... + 183339.

It is an arithmetic number, because the mean of its divisors is an integer number (7330440).

Almost surely, 2^28955159 is an apocalyptic number.

28955159 is a deficient number, since it is larger than the sum of its proper divisors (366601).

28955159 is an equidigital number, since it uses as much as digits as its factorization.

28955159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366600.

The product of its digits is 162000, while the sum is 44.

The square root of 28955159 is about 5380.9998141609. Note that the first 3 decimals coincide. The cubic root of 28955159 is about 307.0732494350.

The spelling of 28955159 in words is "twenty-eight million, nine hundred fifty-five thousand, one hundred fifty-nine".