3728317 has 2 divisors, whose sum is σ = 3728318. Its totient is φ = 3728316.

The previous prime is 3728311. The next prime is 3728357. The reversal of 3728317 is 7138273.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3632836 + 95481 = 1906^2 + 309^2 .

It is an emirp because it is prime and its reverse (7138273) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3728317 - 2⁷ = 3728189 is a prime.

It is a d-powerful number, because it can be written as 3⁹ + 7³ + 2²¹ + 8 + 3¹³ + 1 + 7⁵ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3728311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1864158 + 1864159.

It is an arithmetic number, because the mean of its divisors is an integer number (1864159).

Almost surely, 2^3728317 is an apocalyptic number.

It is an amenable number.

3728317 is a deficient number, since it is larger than the sum of its proper divisors (1).

3728317 is an equidigital number, since it uses as much as digits as its factorization.

3728317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7056, while the sum is 31.

The square root of 3728317 is about 1930.8850302387. The cubic root of 3728317 is about 155.0616057574.

Adding to 3728317 its product of digits (7056), we get a palindrome (3735373).

The spelling of 3728317 in words is "three million, seven hundred twenty-eight thousand, three hundred seventeen".