1116689280 has 256 divisors, whose sum is σ = 4283020800. Its totient is φ = 241754112.

The previous prime is 1116689269. The next prime is 1116689281. The reversal of 1116689280 is 829866111.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1116689281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 253174 + ... + 257546.

It is an arithmetic number, because the mean of its divisors is an integer number (16730550).

Almost surely, 2^1116689280 is an apocalyptic number.

1116689280 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 1116689280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2141510400).

1116689280 is an abundant number, since it is smaller than the sum of its proper divisors (3166331520).

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

1116689280 is a wasteful number, since it uses less digits than its factorization.

1116689280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4421 (or 4409 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 42.

The square root of 1116689280 is about 33416.9011130595. The cubic root of 1116689280 is about 1037.4745429472.

The spelling of 1116689280 in words is "one billion, one hundred sixteen million, six hundred eighty-nine thousand, two hundred eighty".