3728080 has 20 divisors (see below), whose sum is σ = 8667972. Its totient is φ = 1491200.

The previous prime is 3728069. The next prime is 3728099. The reversal of 3728080 is 808273.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 824464 + 2903616 = 908^2 + 1704^2 .

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23221 + ... + 23380.

Almost surely, 2^3728080 is an apocalyptic number.

It is an amenable number.

3728080 is an abundant number, since it is smaller than the sum of its proper divisors (4939892).

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

3728080 is a wasteful number, since it uses less digits than its factorization.

3728080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46614 (or 46608 counting only the distinct ones).

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

The square root of 3728080 is about 1930.8236584422. The cubic root of 3728080 is about 155.0583200587.

The spelling of 3728080 in words is "three million, seven hundred twenty-eight thousand, eighty".