3720720 has 80 divisors (see below), whose sum is σ = 11874240. Its totient is φ = 963072.

The previous prime is 3720707. The next prime is 3720767. The reversal of 3720720 is 270273.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8671 + ... + 9089.

It is an arithmetic number, because the mean of its divisors is an integer number (148428).

Almost surely, 2^3720720 is an apocalyptic number.

3720720 is a gapful number since it is divisible by the number (30) 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 3720720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5937120).

3720720 is an abundant number, since it is smaller than the sum of its proper divisors (8153520).

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

3720720 is a wasteful number, since it uses less digits than its factorization.

3720720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472 (or 466 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 21.

The square root of 3720720 is about 1928.9167944730. The cubic root of 3720720 is about 154.9562137852.

Adding to 3720720 its reverse (270273), we get a palindrome (3990993).

It can be divided in two parts, 3 and 720720, that multiplied together give a triangular number (2162160 = T₂₀₇₉).

The spelling of 3720720 in words is "three million, seven hundred twenty thousand, seven hundred twenty".