1320100044 has 48 divisors (see below), whose sum is σ = 3145830912. Its totient is φ = 430702272.

The previous prime is 1320100021. The next prime is 1320100049. The reversal of 1320100044 is 4400010231.

It is a junction number, because it is equal to n+sod(n) for n = 1320099996 and 1320100032.

It is not an unprimeable number, because it can be changed into a prime (1320100049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292227 + ... + 296709.

It is an arithmetic number, because the mean of its divisors is an integer number (65538144).

Almost surely, 2^1320100044 is an apocalyptic number.

It is an amenable number.

1320100044 is an abundant number, since it is smaller than the sum of its proper divisors (1825730868).

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

1320100044 is a wasteful number, since it uses less digits than its factorization.

1320100044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5006 (or 5004 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1320100044 is about 36333.1810333199. The cubic root of 1320100044 is about 1096.9890230181.

Adding to 1320100044 its reverse (4400010231), we get a palindrome (5720110275).

The spelling of 1320100044 in words is "one billion, three hundred twenty million, one hundred thousand, forty-four".