28244161 has 8 divisors (see below), whose sum is σ = 32151744. Its totient is φ = 24559920.

The previous prime is 28244147. The next prime is 28244171. The reversal of 28244161 is 16144282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28244161 - 2⁵ = 28244129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28244101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55566 + ... + 56071.

It is an arithmetic number, because the mean of its divisors is an integer number (4018968).

Almost surely, 2^28244161 is an apocalyptic number.

It is an amenable number.

28244161 is a deficient number, since it is larger than the sum of its proper divisors (3907583).

28244161 is a wasteful number, since it uses less digits than its factorization.

28244161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111671.

The product of its digits is 3072, while the sum is 28.

The square root of 28244161 is about 5314.5235910663. The cubic root of 28244161 is about 304.5389828066.

The spelling of 28244161 in words is "twenty-eight million, two hundred forty-four thousand, one hundred sixty-one".