2171136 has 72 divisors (see below), whose sum is σ = 6328224. Its totient is φ = 655360.

The previous prime is 2171119. The next prime is 2171159. The reversal of 2171136 is 6311712.

2171136 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8320 + ... + 8576.

It is an arithmetic number, because the mean of its divisors is an integer number (87892).

2^2171136 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 2171136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3164112).

2171136 is an abundant number, since it is smaller than the sum of its proper divisors (4157088).

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

2171136 is a wasteful number, since it uses less digits than its factorization.

2171136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 273 counting only the distinct ones).

The product of its digits is 252, while the sum is 21.

The square root of 2171136 is about 1473.4775193399. The cubic root of 2171136 is about 129.4878468840.

Adding to 2171136 its reverse (6311712), we get a palindrome (8482848).

It can be divided in two parts, 21 and 71136, that multiplied together give a triangular number (1493856 = T₁₇₂₈).

The spelling of 2171136 in words is "two million, one hundred seventy-one thousand, one hundred thirty-six".