3728549 has 4 divisors (see below), whose sum is σ = 4067520. Its totient is φ = 3389580.

The previous prime is 3728537. The next prime is 3728561. The reversal of 3728549 is 9458273.

3728549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (3728537) and next prime (3728561).

It is a cyclic number.

It is not a de Polignac number, because 3728549 - 2⁴ = 3728533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3728509) 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 in 3 ways as a sum of consecutive naturals, for example, 169469 + ... + 169490.

It is an arithmetic number, because the mean of its divisors is an integer number (1016880).

Almost surely, 2^3728549 is an apocalyptic number.

It is an amenable number.

3728549 is a deficient number, since it is larger than the sum of its proper divisors (338971).

3728549 is a wasteful number, since it uses less digits than its factorization.

3728549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338970.

The product of its digits is 60480, while the sum is 38.

The square root of 3728549 is about 1930.9451053823. The cubic root of 3728549 is about 155.0648220027.

The spelling of 3728549 in words is "three million, seven hundred twenty-eight thousand, five hundred forty-nine".