11239488720 has 210 divisors, whose sum is σ = 39269244978. Its totient is φ = 2990369664.

The previous prime is 11239488719. The next prime is 11239488751. The reversal of 11239488720 is 2788493211.

It is a happy number.

11239488720 is a `hidden beast` number, since 112 + 39 + 488 + 7 + 20 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8991590976 + 2247897744 = 94824^2 + 47412^2 .

It is a super-2 number, since 2×11239488720² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 25602261 + ... + 25602699.

Almost surely, 2^11239488720 is an apocalyptic number.

11239488720 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 11239488720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19634622489).

11239488720 is an abundant number, since it is smaller than the sum of its proper divisors (28029756258).

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

11239488720 is an frugal number, since it uses more digits than its factorization.

11239488720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909 (or 449 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

Multiplying 11239488720 by its sum of digits (45), we get a square (505776992400 = 711180²).

11239488720 divided by its sum of digits (45) gives a square (249766416 = 15804²).

The spelling of 11239488720 in words is "eleven billion, two hundred thirty-nine million, four hundred eighty-eight thousand, seven hundred twenty".