2156682 has 32 divisors (see below), whose sum is σ = 4826304. Its totient is φ = 636800.

The previous prime is 2156681. The next prime is 2156683. The reversal of 2156682 is 2866512.

It is an interprime number because it is at equal distance from previous prime (2156681) and next prime (2156683).

It is not an unprimeable number, because it can be changed into a prime (2156681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2308 + ... + 3104.

It is an arithmetic number, because the mean of its divisors is an integer number (150822).

2^2156682 is an apocalyptic number.

2156682 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2156682, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2413152).

2156682 is an abundant number, since it is smaller than the sum of its proper divisors (2669622).

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

2156682 is a wasteful number, since it uses less digits than its factorization.

2156682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854.

The product of its digits is 5760, while the sum is 30.

The square root of 2156682 is about 1468.5646053204. The cubic root of 2156682 is about 129.1998584604.

The spelling of 2156682 in words is "two million, one hundred fifty-six thousand, six hundred eighty-two".