844783680 has 336 divisors, whose sum is σ = 2998646784. Its totient is φ = 201277440.

The previous prime is 844783679. The next prime is 844783729. The reversal of 844783680 is 86387448.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6651777 + ... + 6651903.

It is an arithmetic number, because the mean of its divisors is an integer number (8924544).

Almost surely, 2^844783680 is an apocalyptic number.

844783680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 844783680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1499323392).

844783680 is an abundant number, since it is smaller than the sum of its proper divisors (2153863104).

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

844783680 is a wasteful number, since it uses less digits than its factorization.

844783680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 48.

The square root of 844783680 is about 29065.1626522199. The cubic root of 844783680 is about 945.3265129658.

The spelling of 844783680 in words is "eight hundred forty-four million, seven hundred eighty-three thousand, six hundred eighty".