28743448 has 16 divisors (see below), whose sum is σ = 55632960. Its totient is φ = 13908000.

The previous prime is 28743401. The next prime is 28743467. The reversal of 28743448 is 84434782.

It is a self number, because there is not a number n which added to its sum of digits gives 28743448.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 57703 + ... + 58198.

It is an arithmetic number, because the mean of its divisors is an integer number (3477060).

Almost surely, 2^28743448 is an apocalyptic number.

It is an amenable number.

28743448 is a deficient number, since it is larger than the sum of its proper divisors (26889512).

28743448 is a wasteful number, since it uses less digits than its factorization.

28743448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115938 (or 115934 counting only the distinct ones).

The product of its digits is 172032, while the sum is 40.

The square root of 28743448 is about 5361.2916354177. The cubic root of 28743448 is about 306.3230103313.

The spelling of 28743448 in words is "twenty-eight million, seven hundred forty-three thousand, four hundred forty-eight".