3720320 has 32 divisors (see below), whose sum is σ = 8895420. Its totient is φ = 1487872.

The previous prime is 3720293. The next prime is 3720337. The reversal of 3720320 is 230273.

It can be written as a sum of positive squares in 2 ways, for example, as 3717184 + 3136 = 1928^2 + 56^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2267 + ... + 3546.

Almost surely, 2^3720320 is an apocalyptic number.

It is an amenable number.

3720320 is an abundant number, since it is smaller than the sum of its proper divisors (5175100).

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

3720320 is an equidigital number, since it uses as much as digits as its factorization.

3720320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5832 (or 5820 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 17.

The square root of 3720320 is about 1928.8131065502. The cubic root of 3720320 is about 154.9506606748.

Adding to 3720320 its reverse (230273), we get a palindrome (3950593).

The spelling of 3720320 in words is "three million, seven hundred twenty thousand, three hundred twenty".