2160920 has 32 divisors (see below), whose sum is σ = 4924800. Its totient is φ = 853248.

The previous prime is 2160913. The next prime is 2160923. The reversal of 2160920 is 290612.

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

It is a junction number, because it is equal to n+sod(n) for n = 2160892 and 2160901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2160923) 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, 3257 + ... + 3863.

It is an arithmetic number, because the mean of its divisors is an integer number (153900).

2^2160920 is an apocalyptic number.

2160920 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 2160920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2462400).

2160920 is an abundant number, since it is smaller than the sum of its proper divisors (2763880).

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

2160920 is a wasteful number, since it uses less digits than its factorization.

2160920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707 (or 703 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 2160920 is about 1470.0068027053. The cubic root of 2160920 is about 129.2844313887.

Subtracting from 2160920 its sum of digits (20), we obtain a square (2160900 = 1470²).

The spelling of 2160920 in words is "two million, one hundred sixty thousand, nine hundred twenty".