844680428 has 48 divisors (see below), whose sum is σ = 1668086784. Its totient is φ = 372092160.

The previous prime is 844680427. The next prime is 844680439. The reversal of 844680428 is 824086448.

It is a happy number.

844680428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (844680427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67763 + ... + 79253.

It is an arithmetic number, because the mean of its divisors is an integer number (34751808).

Almost surely, 2^844680428 is an apocalyptic number.

It is an amenable number.

844680428 is a deficient number, since it is larger than the sum of its proper divisors (823406356).

844680428 is a wasteful number, since it uses less digits than its factorization.

844680428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11582 (or 11580 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 44.

The square root of 844680428 is about 29063.3863821820. The cubic root of 844680428 is about 945.2879978475.

The spelling of 844680428 in words is "eight hundred forty-four million, six hundred eighty thousand, four hundred twenty-eight".