28844971 has 8 divisors (see below), whose sum is σ = 30651264. Its totient is φ = 27050880.

The previous prime is 28844929. The next prime is 28845007. The reversal of 28844971 is 17944882.

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

It is a cyclic number.

It is not a de Polignac number, because 28844971 - 2⁷ = 28844843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28841971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2086 + ... + 7876.

It is an arithmetic number, because the mean of its divisors is an integer number (3831408).

Almost surely, 2^28844971 is an apocalyptic number.

28844971 is a deficient number, since it is larger than the sum of its proper divisors (1806293).

28844971 is a wasteful number, since it uses less digits than its factorization.

28844971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6101.

The product of its digits is 129024, while the sum is 43.

The square root of 28844971 is about 5370.7514371827. The cubic root of 28844971 is about 306.6832349009.

The spelling of 28844971 in words is "twenty-eight million, eight hundred forty-four thousand, nine hundred seventy-one".