3728530 has 64 divisors (see below), whose sum is σ = 7983360. Its totient is φ = 1241856.

The previous prime is 3728513. The next prime is 3728533. The reversal of 3728530 is 358273.

It is not an unprimeable number, because it can be changed into a prime (3728533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86689 + ... + 86731.

It is an arithmetic number, because the mean of its divisors is an integer number (124740).

Almost surely, 2^3728530 is an apocalyptic number.

3728530 is an abundant number, since it is smaller than the sum of its proper divisors (4254830).

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

3728530 is a wasteful number, since it uses less digits than its factorization.

3728530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 3728530 is about 1930.9401855055. The cubic root of 3728530 is about 155.0645586084.

The spelling of 3728530 in words is "three million, seven hundred twenty-eight thousand, five hundred thirty".