28924443 has 6 divisors (see below), whose sum is σ = 41779764. Its totient is φ = 19282956.

The previous prime is 28924381. The next prime is 28924447. The reversal of 28924443 is 34442982.

It is not a de Polignac number, because 28924443 - 2⁹ = 28923931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28924398 and 28924407.

It is not an unprimeable number, because it can be changed into a prime (28924447) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1606905 + ... + 1606922.

It is an arithmetic number, because the mean of its divisors is an integer number (6963294).

Almost surely, 2^28924443 is an apocalyptic number.

28924443 is a deficient number, since it is larger than the sum of its proper divisors (12855321).

28924443 is a wasteful number, since it uses less digits than its factorization.

28924443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3213833 (or 3213830 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 28924443 is about 5378.1449404046. The cubic root of 28924443 is about 306.9646286176.

The spelling of 28924443 in words is "twenty-eight million, nine hundred twenty-four thousand, four hundred forty-three".