116640220 has 24 divisors (see below), whose sum is σ = 248397408. Its totient is φ = 45998400.

The previous prime is 116640217. The next prime is 116640287. The reversal of 116640220 is 22046611.

It is a junction number, because it is equal to n+sod(n) for n = 116640191 and 116640200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39651 + ... + 42490.

It is an arithmetic number, because the mean of its divisors is an integer number (10349892).

Almost surely, 2^116640220 is an apocalyptic number.

116640220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

116640220 is an abundant number, since it is smaller than the sum of its proper divisors (131757188).

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

116640220 is a wasteful number, since it uses less digits than its factorization.

116640220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82221 (or 82219 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 116640220 is about 10800.0101851804. The cubic root of 116640220 is about 488.5954781741.

Adding to 116640220 its reverse (22046611), we get a palindrome (138686831).

The spelling of 116640220 in words is "one hundred sixteen million, six hundred forty thousand, two hundred twenty".