116401220 has 48 divisors (see below), whose sum is σ = 277112640. Its totient is φ = 40715136.

The previous prime is 116401189. The next prime is 116401247. The reversal of 116401220 is 22104611.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6842 + ... + 16721.

It is an arithmetic number, because the mean of its divisors is an integer number (5773180).

Almost surely, 2^116401220 is an apocalyptic number.

116401220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

116401220 is an abundant number, since it is smaller than the sum of its proper divisors (160711420).

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

116401220 is a wasteful number, since it uses less digits than its factorization.

116401220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23604 (or 23602 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 116401220 is about 10788.9397069406. The cubic root of 116401220 is about 488.2615334208.

Adding to 116401220 its reverse (22104611), we get a palindrome (138505831).

The spelling of 116401220 in words is "one hundred sixteen million, four hundred one thousand, two hundred twenty".