2180724 has 48 divisors (see below), whose sum is σ = 6265728. Its totient is φ = 574848.

The previous prime is 2180723. The next prime is 2180741. The reversal of 2180724 is 4270812.

It is a junction number, because it is equal to n+sod(n) for n = 2180694 and 2180703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2180723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94 + ... + 2090.

It is an arithmetic number, because the mean of its divisors is an integer number (130536).

2^2180724 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 2180724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3132864).

2180724 is an abundant number, since it is smaller than the sum of its proper divisors (4085004).

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

2180724 is a wasteful number, since it uses less digits than its factorization.

2180724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2024 (or 2022 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 2180724 is about 1476.7274630073. The cubic root of 2180724 is about 129.6781783303.

It can be divided in two parts, 21 and 80724, that multiplied together give a square (1695204 = 1302²).

The spelling of 2180724 in words is "two million, one hundred eighty thousand, seven hundred twenty-four".