28924441 has 16 divisors (see below), whose sum is σ = 37475200. Its totient is φ = 21679488.

The previous prime is 28924381. The next prime is 28924447. The reversal of 28924441 is 14442982.

It is a cyclic number.

It is not a de Polignac number, because 28924441 - 2¹⁹ = 28400153 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28924397 and 28924406.

It is not an unprimeable number, because it can be changed into a prime (28924447) 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 15 ways as a sum of consecutive naturals, for example, 6636 + ... + 10093.

It is an arithmetic number, because the mean of its divisors is an integer number (2342200).

Almost surely, 2^28924441 is an apocalyptic number.

It is an amenable number.

28924441 is a deficient number, since it is larger than the sum of its proper divisors (8550759).

28924441 is a wasteful number, since it uses less digits than its factorization.

28924441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16768.

The product of its digits is 18432, while the sum is 34.

The square root of 28924441 is about 5378.1447544669. The cubic root of 28924441 is about 306.9646215425.

The spelling of 28924441 in words is "twenty-eight million, nine hundred twenty-four thousand, four hundred forty-one".