2196720 has 120 divisors (see below), whose sum is σ = 7718256. Its totient is φ = 580608.

The previous prime is 2196713. The next prime is 2196731. The reversal of 2196720 is 276912.

It is a tau number, because it is divible by the number of its divisors (120).

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 23 ways as a sum of consecutive naturals, for example, 19384 + ... + 19496.

2^2196720 is an apocalyptic number.

2196720 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 2196720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3859128).

2196720 is an abundant number, since it is smaller than the sum of its proper divisors (5521536).

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

2196720 is a wasteful number, since it uses less digits than its factorization.

2196720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 2196720 is about 1482.1335972172. The cubic root of 2196720 is about 129.9944770829.

It can be divided in two parts, 2196 and 720, that added together give a square (2916 = 54²).

The spelling of 2196720 in words is "two million, one hundred ninety-six thousand, seven hundred twenty".