1044872220 has 48 divisors (see below), whose sum is σ = 3343592448. Its totient is φ = 238827840.

The previous prime is 1044872201. The next prime is 1044872237. The reversal of 1044872220 is 222784401.

It is a super-2 number, since 2×1044872220² = 2183515912255456800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1243476 + ... + 1244315.

It is an arithmetic number, because the mean of its divisors is an integer number (69658176).

Almost surely, 2^1044872220 is an apocalyptic number.

1044872220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1044872220 is an abundant number, since it is smaller than the sum of its proper divisors (2298720228).

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

1044872220 is a wasteful number, since it uses less digits than its factorization.

1044872220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487810 (or 2487808 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 1044872220 is about 32324.4832905338. The cubic root of 1044872220 is about 1014.7390983347.

The spelling of 1044872220 in words is "one billion, forty-four million, eight hundred seventy-two thousand, two hundred twenty".