11203038720 has 720 divisors, whose sum is σ = 43490921760. Its totient is φ = 2759049216.

The previous prime is 11203038719. The next prime is 11203038827. The reversal of 11203038720 is 2783030211.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (27).

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 71 ways as a sum of consecutive naturals, for example, 386311666 + ... + 386311694.

It is an arithmetic number, because the mean of its divisors is an integer number (60404058).

Almost surely, 2^11203038720 is an apocalyptic number.

11203038720 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 11203038720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21745460880).

11203038720 is an abundant number, since it is smaller than the sum of its proper divisors (32287883040).

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

11203038720 is an frugal number, since it uses more digits than its factorization.

11203038720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99 (or 62 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

Adding to 11203038720 its reverse (2783030211), we get a palindrome (13986068931).

The spelling of 11203038720 in words is "eleven billion, two hundred three million, thirty-eight thousand, seven hundred twenty".