3728293 has 2 divisors, whose sum is σ = 3728294. Its totient is φ = 3728292.

The previous prime is 3728273. The next prime is 3728297. The reversal of 3728293 is 3928273.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3161284 + 567009 = 1778^2 + 753^2 .

It is an emirp because it is prime and its reverse (3928273) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3728293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3728297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1864146 + 1864147.

It is an arithmetic number, because the mean of its divisors is an integer number (1864147).

Almost surely, 2^3728293 is an apocalyptic number.

It is an amenable number.

3728293 is a deficient number, since it is larger than the sum of its proper divisors (1).

3728293 is an equidigital number, since it uses as much as digits as its factorization.

3728293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 34.

The square root of 3728293 is about 1930.8788154620. The cubic root of 3728293 is about 155.0612730348.

The spelling of 3728293 in words is "three million, seven hundred twenty-eight thousand, two hundred ninety-three".