2307820 has 48 divisors (see below), whose sum is σ = 5261760. Its totient is φ = 847616.

The previous prime is 2307763. The next prime is 2307821. The reversal of 2307820 is 287032.

It is a happy number.

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 2307791 and 2307800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2307821) 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, 13254 + ... + 13426.

It is an arithmetic number, because the mean of its divisors is an integer number (109620).

2^2307820 is an apocalyptic number.

2307820 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 2307820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2630880).

2307820 is an abundant number, since it is smaller than the sum of its proper divisors (2953940).

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

2307820 is a wasteful number, since it uses less digits than its factorization.

2307820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 2307820 is about 1519.1510787279. The cubic root of 2307820 is about 132.1500436455.

The spelling of 2307820 in words is "two million, three hundred seven thousand, eight hundred twenty".