1100032020 has 72 divisors (see below), whose sum is σ = 3414386976. Its totient is φ = 286517952.

The previous prime is 1100032019. The next prime is 1100032051. The reversal of 1100032020 is 202300011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1100031993 and 1100032011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63322 + ... + 78801.

Almost surely, 2^1100032020 is an apocalyptic number.

1100032020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100032020 is an abundant number, since it is smaller than the sum of its proper divisors (2314354956).

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

1100032020 is a wasteful number, since it uses less digits than its factorization.

1100032020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142181 (or 142176 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1100032020 is about 33166.7306197038. The cubic root of 1100032020 is about 1032.2901316044.

Adding to 1100032020 its reverse (202300011), we get a palindrome (1302332031).

The spelling of 1100032020 in words is "one billion, one hundred million, thirty-two thousand, twenty".