2206720 has 44 divisors (see below), whose sum is σ = 5305824. Its totient is φ = 880640.

The previous prime is 2206709. The next prime is 2206723. The reversal of 2206720 is 276022.

It is a happy number.

It is a super-2 number, since 2×2206720² = 9739226316800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2206723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4905 + ... + 5335.

2^2206720 is an apocalyptic number.

2206720 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 2206720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2652912).

2206720 is an abundant number, since it is smaller than the sum of its proper divisors (3099104).

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

2206720 is an equidigital number, since it uses as much as digits as its factorization.

2206720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 2206720 is about 1485.5032817197. The cubic root of 2206720 is about 130.1914339383.

It can be divided in two parts, 2206 and 720, that added together give a triangular number (2926 = T₇₆).

The spelling of 2206720 in words is "two million, two hundred six thousand, seven hundred twenty".