3808720 has 20 divisors (see below), whose sum is σ = 8855460. Its totient is φ = 1523456.

The previous prime is 3808711. The next prime is 3808751. The reversal of 3808720 is 278083.

It is a happy number.

3808720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1700416 + 2108304 = 1304^2 + 1452^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23725 + ... + 23884.

It is an arithmetic number, because the mean of its divisors is an integer number (442773).

Almost surely, 2^3808720 is an apocalyptic number.

It is an amenable number.

3808720 is an abundant number, since it is smaller than the sum of its proper divisors (5046740).

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

3808720 is a wasteful number, since it uses less digits than its factorization.

3808720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47622 (or 47616 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 3808720 is about 1951.5942201185. The cubic root of 3808720 is about 156.1683477380.

The spelling of 3808720 in words is "three million, eight hundred eight thousand, seven hundred twenty".