2171396 has 12 divisors (see below), whose sum is σ = 4000080. Its totient is φ = 1028520.

The previous prime is 2171387. The next prime is 2171431. The reversal of 2171396 is 6931712.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14210 + ... + 14361.

It is an arithmetic number, because the mean of its divisors is an integer number (333340).

2^2171396 is an apocalyptic number.

It is an amenable number.

2171396 is a deficient number, since it is larger than the sum of its proper divisors (1828684).

2171396 is a wasteful number, since it uses less digits than its factorization.

2171396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28594 (or 28592 counting only the distinct ones).

The product of its digits is 2268, while the sum is 29.

The square root of 2171396 is about 1473.5657433586. The cubic root of 2171396 is about 129.4930155294.

It can be divided in two parts, 21 and 71396, that added together give a palindrome (71417).

The spelling of 2171396 in words is "two million, one hundred seventy-one thousand, three hundred ninety-six".