2171360 has 48 divisors (see below), whose sum is σ = 5270832. Its totient is φ = 844800.

The previous prime is 2171347. The next prime is 2171383. The reversal of 2171360 is 631712.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6395 + ... + 6725.

It is an arithmetic number, because the mean of its divisors is an integer number (109809).

2^2171360 is an apocalyptic number.

2171360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2171360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2635416).

2171360 is an abundant number, since it is smaller than the sum of its proper divisors (3099472).

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

2171360 is a wasteful number, since it uses less digits than its factorization.

2171360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387 (or 379 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 2171360 is about 1473.5535280403. The cubic root of 2171360 is about 129.4922998955.

The spelling of 2171360 in words is "two million, one hundred seventy-one thousand, three hundred sixty".