1100620400 has 120 divisors (see below), whose sum is σ = 2955467088. Its totient is φ = 390400000.

The previous prime is 1100620387. The next prime is 1100620447. The reversal of 1100620400 is 40260011.

It is a super-2 number, since 2×1100620400² = 2422730529792320000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 177350 + ... + 183450.

Almost surely, 2^1100620400 is an apocalyptic number.

1100620400 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 1100620400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1477733544).

1100620400 is an abundant number, since it is smaller than the sum of its proper divisors (1854846688).

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

1100620400 is a wasteful number, since it uses less digits than its factorization.

1100620400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6171 (or 6160 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1100620400 is about 33175.5994670782. The cubic root of 1100620400 is about 1032.4741476446.

Adding to 1100620400 its reverse (40260011), we get a palindrome (1140880411).

The spelling of 1100620400 in words is "one billion, one hundred million, six hundred twenty thousand, four hundred".