2320720 has 20 divisors (see below), whose sum is σ = 5395860. Its totient is φ = 928256.

The previous prime is 2320709. The next prime is 2320729. The reversal of 2320720 is 270232.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 535824 + 1784896 = 732^2 + 1336^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 2320694 and 2320703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2320729) 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, 14425 + ... + 14584.

It is an arithmetic number, because the mean of its divisors is an integer number (269793).

2^2320720 is an apocalyptic number.

2320720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2320720 is an abundant number, since it is smaller than the sum of its proper divisors (3075140).

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

2320720 is a wasteful number, since it uses less digits than its factorization.

2320720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29022 (or 29016 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 2320720 is about 1523.3909544172. The cubic root of 2320720 is about 132.3958122460.

Adding to 2320720 its reverse (270232), we get a palindrome (2590952).

The spelling of 2320720 in words is "two million, three hundred twenty thousand, seven hundred twenty".