2722380 has 72 divisors (see below), whose sum is σ = 8149008. Its totient is φ = 678912.

The previous prime is 2722367. The next prime is 2722387. The reversal of 2722380 is 832272.

It is a super-2 number, since 2×2722380² = 14822705728800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2722380.

It is not an unprimeable number, because it can be changed into a prime (2722387) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17262 + ... + 17418.

2^2722380 is an apocalyptic number.

2722380 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 2722380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4074504).

2722380 is an abundant number, since it is smaller than the sum of its proper divisors (5426628).

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

2722380 is a wasteful number, since it uses less digits than its factorization.

2722380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 2722380 is about 1649.9636359629. The cubic root of 2722380 is about 139.6313430060.

The spelling of 2722380 in words is "two million, seven hundred twenty-two thousand, three hundred eighty".