28163744 has 24 divisors (see below), whose sum is σ = 63368928. Its totient is φ = 12070080.

The previous prime is 28163743. The next prime is 28163767. The reversal of 28163744 is 44736182.

It is not an unprimeable number, because it can be changed into a prime (28163741) 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, 62642 + ... + 63089.

It is an arithmetic number, because the mean of its divisors is an integer number (2640372).

Almost surely, 2^28163744 is an apocalyptic number.

It is an amenable number.

28163744 is an abundant number, since it is smaller than the sum of its proper divisors (35205184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28163744 is a wasteful number, since it uses less digits than its factorization.

28163744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125748 (or 125740 counting only the distinct ones).

The product of its digits is 32256, while the sum is 35.

The square root of 28163744 is about 5306.9524211170. The cubic root of 28163744 is about 304.2496794585.

The spelling of 28163744 in words is "twenty-eight million, one hundred sixty-three thousand, seven hundred forty-four".