3721528 has 16 divisors (see below), whose sum is σ = 7024680. Its totient is φ = 1848288.

The previous prime is 3721489. The next prime is 3721537. The reversal of 3721528 is 8251273.

3721528 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 3721496 and 3721505.

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, 226 + ... + 2737.

Almost surely, 2^3721528 is an apocalyptic number.

It is an amenable number.

3721528 is a deficient number, since it is larger than the sum of its proper divisors (3303152).

3721528 is a wasteful number, since it uses less digits than its factorization.

3721528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3126 (or 3122 counting only the distinct ones).

The product of its digits is 3360, while the sum is 28.

The square root of 3721528 is about 1929.1262270779. The cubic root of 3721528 is about 154.9674298544.

The spelling of 3721528 in words is "three million, seven hundred twenty-one thousand, five hundred twenty-eight".