3726728 has 8 divisors (see below), whose sum is σ = 6987630. Its totient is φ = 1863360.

The previous prime is 3726721. The next prime is 3726731. The reversal of 3726728 is 8276273.

3726728 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 only one way, i.e., 3319684 + 407044 = 1822^2 + 638^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (3726721) by changing a digit.

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 as a sum of consecutive naturals, namely, 232913 + ... + 232928.

Almost surely, 2^3726728 is an apocalyptic number.

It is an amenable number.

3726728 is a deficient number, since it is larger than the sum of its proper divisors (3260902).

3726728 is a wasteful number, since it uses less digits than its factorization.

3726728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465847 (or 465843 counting only the distinct ones).

The product of its digits is 28224, while the sum is 35.

The square root of 3726728 is about 1930.4735170419. The cubic root of 3726728 is about 155.0395736623.

The spelling of 3726728 in words is "three million, seven hundred twenty-six thousand, seven hundred twenty-eight".