116728720 has 20 divisors (see below), whose sum is σ = 271394460. Its totient is φ = 46691456.

The previous prime is 116728709. The next prime is 116728721. The reversal of 116728720 is 27827611.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 41525136 + 75203584 = 6444^2 + 8672^2 .

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 (116728721) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 729475 + ... + 729634.

It is an arithmetic number, because the mean of its divisors is an integer number (13569723).

Almost surely, 2^116728720 is an apocalyptic number.

116728720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

116728720 is an abundant number, since it is smaller than the sum of its proper divisors (154665740).

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

116728720 is a wasteful number, since it uses less digits than its factorization.

116728720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459122 (or 1459116 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 116728720 is about 10804.1066266490. The cubic root of 116728720 is about 488.7190198027.

The spelling of 116728720 in words is "one hundred sixteen million, seven hundred twenty-eight thousand, seven hundred twenty".