28424944 has 20 divisors (see below), whose sum is σ = 55473880. Its totient is φ = 14109120.

The previous prime is 28424899. The next prime is 28424947. The reversal of 28424944 is 44942482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28424947) 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, 4167 + ... + 8614.

It is an arithmetic number, because the mean of its divisors is an integer number (2773694).

Almost surely, 2^28424944 is an apocalyptic number.

It is an amenable number.

28424944 is a deficient number, since it is larger than the sum of its proper divisors (27048936).

28424944 is a wasteful number, since it uses less digits than its factorization.

28424944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12928 (or 12922 counting only the distinct ones).

The product of its digits is 73728, while the sum is 37.

The square root of 28424944 is about 5331.5048532286. The cubic root of 28424944 is about 305.1873577864.

The spelling of 28424944 in words is "twenty-eight million, four hundred twenty-four thousand, nine hundred forty-four".