1100204400 has 60 divisors (see below), whose sum is σ = 3524325272. Its totient is φ = 293387520.

The previous prime is 1100204381. The next prime is 1100204437. The reversal of 1100204400 is 44020011.

It is a tau number, because it is divible by the number of its divisors (60).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 457219 + ... + 459618.

Almost surely, 2^1100204400 is an apocalyptic number.

1100204400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100204400 is an abundant number, since it is smaller than the sum of its proper divisors (2424120872).

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

1100204400 is a wasteful number, since it uses less digits than its factorization.

1100204400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916858 (or 916847 counting only the distinct ones).

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

The square root of 1100204400 is about 33169.3292063617. The cubic root of 1100204400 is about 1032.3440503012.

Adding to 1100204400 its reverse (44020011), we get a palindrome (1144224411).

The spelling of 1100204400 in words is "one billion, one hundred million, two hundred four thousand, four hundred".