3728513 has 2 divisors, whose sum is σ = 3728514. Its totient is φ = 3728512.

The previous prime is 3728509. The next prime is 3728533. The reversal of 3728513 is 3158273.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2598544 + 1129969 = 1612^2 + 1063^2 .

It is a cyclic number.

It is not a de Polignac number, because 3728513 - 2² = 3728509 is a prime.

It is not a weakly prime, because it can be changed into another prime (3728533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1864256 + 1864257.

It is an arithmetic number, because the mean of its divisors is an integer number (1864257).

Almost surely, 2^3728513 is an apocalyptic number.

It is an amenable number.

3728513 is a deficient number, since it is larger than the sum of its proper divisors (1).

3728513 is an equidigital number, since it uses as much as digits as its factorization.

3728513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 29.

The square root of 3728513 is about 1930.9357834998. The cubic root of 3728513 is about 155.0643229389.

The spelling of 3728513 in words is "three million, seven hundred twenty-eight thousand, five hundred thirteen".