2161260 has 36 divisors (see below), whose sum is σ = 6556368. Its totient is φ = 576288.

The previous prime is 2161259. The next prime is 2161279. The reversal of 2161260 is 621612.

It is a happy number.

2161260 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5824 + ... + 6183.

2^2161260 is an apocalyptic number.

2161260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2161260 is an abundant number, since it is smaller than the sum of its proper divisors (4395108).

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

2161260 is a wasteful number, since it uses less digits than its factorization.

2161260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12022 (or 12017 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2161260 is about 1470.1224438801. The cubic root of 2161260 is about 129.2912115875.

Adding to 2161260 its reverse (621612), we get a palindrome (2782872).

The spelling of 2161260 in words is "two million, one hundred sixty-one thousand, two hundred sixty".