2171104 has 48 divisors (see below), whose sum is σ = 4889808. Its totient is φ = 940032.

The previous prime is 2171101. The next prime is 2171107. The reversal of 2171104 is 4011712.

It is an interprime number because it is at equal distance from previous prime (2171101) and next prime (2171107).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2171101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6919 + ... + 7225.

It is an arithmetic number, because the mean of its divisors is an integer number (101871).

2^2171104 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 2171104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2444904).

2171104 is an abundant number, since it is smaller than the sum of its proper divisors (2718704).

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

2171104 is a wasteful number, since it uses less digits than its factorization.

2171104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347 (or 339 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 2171104 is about 1473.4666606340. The cubic root of 2171104 is about 129.4872107145.

Adding to 2171104 its reverse (4011712), we get a palindrome (6182816).

The spelling of 2171104 in words is "two million, one hundred seventy-one thousand, one hundred four".