1117868720 has 20 divisors (see below), whose sum is σ = 2599044960. Its totient is φ = 447147456.

The previous prime is 1117868671. The next prime is 1117868729. The reversal of 1117868720 is 278687111.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (1117868729) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6986600 + ... + 6986759.

It is an arithmetic number, because the mean of its divisors is an integer number (129952248).

Almost surely, 2^1117868720 is an apocalyptic number.

1117868720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1117868720 is an abundant number, since it is smaller than the sum of its proper divisors (1481176240).

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

1117868720 is a wasteful number, since it uses less digits than its factorization.

1117868720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13973372 (or 13973366 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 41.

The square root of 1117868720 is about 33434.5438132480. The cubic root of 1117868720 is about 1037.8396723972.

The spelling of 1117868720 in words is "one billion, one hundred seventeen million, eight hundred sixty-eight thousand, seven hundred twenty".