844012224 has 420 divisors, whose sum is σ = 2950832808. Its totient is φ = 236390400.

The previous prime is 844012219. The next prime is 844012261. The reversal of 844012224 is 422210448.

It is a super-2 number, since 2×844012224² = 1424713268522852352, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 59 ways as a sum of consecutive naturals, for example, 20585644 + ... + 20585684.

Almost surely, 2^844012224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 844012224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1475416404).

844012224 is an abundant number, since it is smaller than the sum of its proper divisors (2106820584).

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

844012224 is a wasteful number, since it uses less digits than its factorization.

844012224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

The square root of 844012224 is about 29051.8884756224. Note that the first 3 decimals coincide. The cubic root of 844012224 is about 945.0386681078.

The spelling of 844012224 in words is "eight hundred forty-four million, twelve thousand, two hundred twenty-four".