1100440020 has 48 divisors (see below), whose sum is σ = 3109518720. Its totient is φ = 290756736.

The previous prime is 1100440013. The next prime is 1100440027. The reversal of 1100440020 is 200440011.

It is an interprime number because it is at equal distance from previous prime (1100440013) and next prime (1100440027).

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 = 1100439978 and 1100440005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100440027) 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, 77592 + ... + 90671.

It is an arithmetic number, because the mean of its divisors is an integer number (64781640).

Almost surely, 2^1100440020 is an apocalyptic number.

1100440020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100440020 is an abundant number, since it is smaller than the sum of its proper divisors (2009078700).

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

1100440020 is a wasteful number, since it uses less digits than its factorization.

1100440020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168384 (or 168382 counting only the distinct ones).

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

The square root of 1100440020 is about 33172.8807913934. The cubic root of 1100440020 is about 1032.4177407121.

Adding to 1100440020 its reverse (200440011), we get a palindrome (1300880031).

Subtracting from 1100440020 its reverse (200440011), we obtain a palindrome (900000009).

The spelling of 1100440020 in words is "one billion, one hundred million, four hundred forty thousand, twenty".