2290720 has 48 divisors (see below), whose sum is σ = 5503680. Its totient is φ = 900864.

The previous prime is 2290703. The next prime is 2290721. The reversal of 2290720 is 270922.

It is a junction number, because it is equal to n+sod(n) for n = 2290691 and 2290700.

It is not an unprimeable number, because it can be changed into a prime (2290721) 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, 16411 + ... + 16549.

It is an arithmetic number, because the mean of its divisors is an integer number (114660).

2^2290720 is an apocalyptic number.

2290720 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 2290720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2751840).

2290720 is an abundant number, since it is smaller than the sum of its proper divisors (3212960).

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

2290720 is a wasteful number, since it uses less digits than its factorization.

2290720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 2290720 is about 1513.5124710421. The cubic root of 2290720 is about 131.8228416181.

The spelling of 2290720 in words is "two million, two hundred ninety thousand, seven hundred twenty".