28871935 has 4 divisors (see below), whose sum is σ = 34646328. Its totient is φ = 23097544.

The previous prime is 28871929. The next prime is 28871939. The reversal of 28871935 is 53917882.

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 28871935 - 2¹³ = 28863743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28871891 and 28871900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28871939) 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, 2887189 + ... + 2887198.

It is an arithmetic number, because the mean of its divisors is an integer number (8661582).

Almost surely, 2^28871935 is an apocalyptic number.

28871935 is a deficient number, since it is larger than the sum of its proper divisors (5774393).

28871935 is an equidigital number, since it uses as much as digits as its factorization.

28871935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5774392.

The product of its digits is 120960, while the sum is 43.

The square root of 28871935 is about 5373.2611140722. The cubic root of 28871935 is about 306.7787666473.

The spelling of 28871935 in words is "twenty-eight million, eight hundred seventy-one thousand, nine hundred thirty-five".