1044100020 has 96 divisors (see below), whose sum is σ = 2988453888. Its totient is φ = 272305152.

The previous prime is 1044100009. The next prime is 1044100087. The reversal of 1044100020 is 200014401.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1044099969 and 1044100005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 555322 + ... + 557198.

It is an arithmetic number, because the mean of its divisors is an integer number (31129728).

Almost surely, 2^1044100020 is an apocalyptic number.

1044100020 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 1044100020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1494226944).

1044100020 is an abundant number, since it is smaller than the sum of its proper divisors (1944353868).

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

1044100020 is a wasteful number, since it uses less digits than its factorization.

1044100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2089 (or 2087 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1044100020 is about 32312.5365763816. The cubic root of 1044100020 is about 1014.4890599000.

Adding to 1044100020 its reverse (200014401), we get a palindrome (1244114421).

The spelling of 1044100020 in words is "one billion, forty-four million, one hundred thousand, twenty".