1103156400 has 120 divisors (see below), whose sum is σ = 3616127680. Its totient is φ = 287320320.

The previous prime is 1103156399. The next prime is 1103156419. The reversal of 1103156400 is 46513011.

It is a tau number, because it is divible by the number of its divisors (120).

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, 40911 + ... + 62289.

Almost surely, 2^1103156400 is an apocalyptic number.

1103156400 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 1103156400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1808063840).

1103156400 is an abundant number, since it is smaller than the sum of its proper divisors (2512971280).

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

1103156400 is a wasteful number, since it uses less digits than its factorization.

1103156400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21443 (or 21432 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1103156400 is about 33213.7983374380. The cubic root of 1103156400 is about 1033.2665328537.

Adding to 1103156400 its reverse (46513011), we get a palindrome (1149669411).

The spelling of 1103156400 in words is "one billion, one hundred three million, one hundred fifty-six thousand, four hundred".