1044113220 has 192 divisors, whose sum is σ = 3337044480. Its totient is φ = 270950400.

The previous prime is 1044113219. The next prime is 1044113243. The reversal of 1044113220 is 223114401.

1044113220 is a `hidden beast` number, since 1 + 0 + 441 + 1 + 3 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1044113193 and 1044113202.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4332300 + ... + 4332540.

It is an arithmetic number, because the mean of its divisors is an integer number (17380440).

Almost surely, 2^1044113220 is an apocalyptic number.

1044113220 is a gapful number since it is divisible by the number (10) 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 1044113220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1668522240).

1044113220 is an abundant number, since it is smaller than the sum of its proper divisors (2292931260).

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

1044113220 is a wasteful number, since it uses less digits than its factorization.

1044113220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1044113220 is about 32312.7408308240. The cubic root of 1044113220 is about 1014.4933350968.

Adding to 1044113220 its reverse (223114401), we get a palindrome (1267227621).

The spelling of 1044113220 in words is "one billion, forty-four million, one hundred thirteen thousand, two hundred twenty".