2116286172 has 144 divisors (see below), whose sum is σ = 7182669312. Its totient is φ = 507392640.

The previous prime is 2116286171. The next prime is 2116286203. The reversal of 2116286172 is 2716826112.

2116286172 is a `hidden beast` number, since 2 + 1 + 16 + 28 + 617 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2116286171) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6673 + ... + 65399.

It is an arithmetic number, because the mean of its divisors is an integer number (49879648).

Almost surely, 2^2116286172 is an apocalyptic number.

2116286172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2116286172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3591334656).

2116286172 is an abundant number, since it is smaller than the sum of its proper divisors (5066383140).

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

2116286172 is a wasteful number, since it uses less digits than its factorization.

2116286172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58768 (or 58763 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 2116286172 is about 46003.1104600548. The cubic root of 2116286172 is about 1283.8810775817.

The spelling of 2116286172 in words is "two billion, one hundred sixteen million, two hundred eighty-six thousand, one hundred seventy-two".