216100144 has 40 divisors (see below), whose sum is σ = 457283232. Its totient is φ = 98327040.

The previous prime is 216100139. The next prime is 216100147. The reversal of 216100144 is 441001612.

It is not an unprimeable number, because it can be changed into a prime (216100147) 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 7 ways as a sum of consecutive naturals, for example, 7452 + ... + 22084.

Almost surely, 2^216100144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216100144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228641616).

216100144 is an abundant number, since it is smaller than the sum of its proper divisors (241183088).

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

216100144 is a wasteful number, since it uses less digits than its factorization.

216100144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14725 (or 14719 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 216100144 is about 14700.3450299644. The cubic root of 216100144 is about 600.0927115995.

Adding to 216100144 its reverse (441001612), we get a palindrome (657101756).

The spelling of 216100144 in words is "two hundred sixteen million, one hundred thousand, one hundred forty-four".