1117836720 has 960 divisors, whose sum is σ = 5319659520. Its totient is φ = 209848320.

The previous prime is 1117836689. The next prime is 1117836721. The reversal of 1117836720 is 276387111.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1117836721) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 23783737 + ... + 23783783.

It is an arithmetic number, because the mean of its divisors is an integer number (5541312).

Almost surely, 2^1117836720 is an apocalyptic number.

1117836720 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 1117836720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2659829760).

1117836720 is an abundant number, since it is smaller than the sum of its proper divisors (4201822800).

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

1117836720 is a wasteful number, since it uses less digits than its factorization.

1117836720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 1117836720 is about 33434.0652628423. The cubic root of 1117836720 is about 1037.8297692706.

The spelling of 1117836720 in words is "one billion, one hundred seventeen million, eight hundred thirty-six thousand, seven hundred twenty".