28041771 has 4 divisors (see below), whose sum is σ = 37389032. Its totient is φ = 18694512.

The previous prime is 28041703. The next prime is 28041773. The reversal of 28041771 is 17714082.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 28041771 - 2¹⁷ = 27910699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28041773) 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, 4673626 + ... + 4673631.

It is an arithmetic number, because the mean of its divisors is an integer number (9347258).

Almost surely, 2^28041771 is an apocalyptic number.

28041771 is a deficient number, since it is larger than the sum of its proper divisors (9347261).

28041771 is an equidigital number, since it uses as much as digits as its factorization.

28041771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9347260.

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 28041771 is about 5295.4481396762. The cubic root of 28041771 is about 303.8098237772.

The spelling of 28041771 in words is "twenty-eight million, forty-one thousand, seven hundred seventy-one".