3728231 has 16 divisors (see below), whose sum is σ = 4315584. Its totient is φ = 3193344.

The previous prime is 3728203. The next prime is 3728243. The reversal of 3728231 is 1328273.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3728231 is a prime.

It is a super-2 number, since 2×3728231² = 27799412778722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3728231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3728251) 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 15 ways as a sum of consecutive naturals, for example, 10895 + ... + 11231.

It is an arithmetic number, because the mean of its divisors is an integer number (269724).

Almost surely, 2^3728231 is an apocalyptic number.

3728231 is a deficient number, since it is larger than the sum of its proper divisors (587353).

3728231 is a wasteful number, since it uses less digits than its factorization.

3728231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410.

The product of its digits is 2016, while the sum is 26.

The square root of 3728231 is about 1930.8627605296. The cubic root of 3728231 is about 155.0604134947.

It can be divided in two parts, 3728 and 231, that multiplied together give a palindrome (861168).

The spelling of 3728231 in words is "three million, seven hundred twenty-eight thousand, two hundred thirty-one".