3728331 has 6 divisors (see below), whose sum is σ = 5385380. Its totient is φ = 2485548.

The previous prime is 3728317. The next prime is 3728357. The reversal of 3728331 is 1338273.

It is not a de Polignac number, because 3728331 - 2⁶ = 3728267 is a prime.

It is a super-2 number, since 2×3728331² = 27800904091122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3728295 and 3728304.

It is not an unprimeable number, because it can be changed into a prime (3728311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 207121 + ... + 207138.

Almost surely, 2^3728331 is an apocalyptic number.

3728331 is a deficient number, since it is larger than the sum of its proper divisors (1657049).

3728331 is a wasteful number, since it uses less digits than its factorization.

3728331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414265 (or 414262 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 3728331 is about 1930.8886555159. Note that the first 3 decimals coincide. The cubic root of 3728331 is about 155.0617998450.

The spelling of 3728331 in words is "three million, seven hundred twenty-eight thousand, three hundred thirty-one".