2160864 has 96 divisors (see below), whose sum is σ = 6562080. Its totient is φ = 691200.

The previous prime is 2160857. The next prime is 2160881. The reversal of 2160864 is 4680612.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35394 + ... + 35454.

It is an arithmetic number, because the mean of its divisors is an integer number (68355).

2^2160864 is an apocalyptic number.

2160864 is a gapful number since it is divisible by the number (24) 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 2160864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3281040).

2160864 is an abundant number, since it is smaller than the sum of its proper divisors (4401216).

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

2160864 is a wasteful number, since it uses less digits than its factorization.

2160864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 2160864 is about 1469.9877550510. The cubic root of 2160864 is about 129.2833145819.

The spelling of 2160864 in words is "two million, one hundred sixty thousand, eight hundred sixty-four".