844723428 has 24 divisors (see below), whose sum is σ = 1983580032. Its totient is φ = 279780384.

The previous prime is 844723393. The next prime is 844723441. The reversal of 844723428 is 824327448.

844723428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 844723428.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222300 + ... + 226067.

It is an arithmetic number, because the mean of its divisors is an integer number (82649168).

Almost surely, 2^844723428 is an apocalyptic number.

It is an amenable number.

844723428 is an abundant number, since it is smaller than the sum of its proper divisors (1138856604).

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

844723428 is a wasteful number, since it uses less digits than its factorization.

844723428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448531 (or 448529 counting only the distinct ones).

The product of its digits is 344064, while the sum is 42.

The square root of 844723428 is about 29064.1261351516. The cubic root of 844723428 is about 945.3040381127.

The spelling of 844723428 in words is "eight hundred forty-four million, seven hundred twenty-three thousand, four hundred twenty-eight".