2171268 has 36 divisors (see below), whose sum is σ = 5988528. Its totient is φ = 657840.

The previous prime is 2171261. The next prime is 2171293. The reversal of 2171268 is 8621712.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (2171261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2346 + ... + 3137.

It is an arithmetic number, because the mean of its divisors is an integer number (166348).

2^2171268 is an apocalyptic number.

It is an amenable number.

2171268 is an abundant number, since it is smaller than the sum of its proper divisors (3817260).

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

2171268 is a wasteful number, since it uses less digits than its factorization.

2171268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5504 (or 5499 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 2171268 is about 1473.5223106557. The cubic root of 2171268 is about 129.4904710171.

It can be divided in two parts, 217 and 1268, that added together give a triangular number (1485 = T₅₄).

The spelling of 2171268 in words is "two million, one hundred seventy-one thousand, two hundred sixty-eight".