3828257 has 4 divisors (see below), whose sum is σ = 3854100. Its totient is φ = 3802416.

The previous prime is 3828239. The next prime is 3828259. The reversal of 3828257 is 7528283.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7528283 = 7 ⋅1075469.

It can be written as a sum of positive squares in 2 ways, for example, as 1934881 + 1893376 = 1391^2 + 1376^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3828257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3828259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12698 + ... + 12995.

It is an arithmetic number, because the mean of its divisors is an integer number (963525).

Almost surely, 2^3828257 is an apocalyptic number.

It is an amenable number.

3828257 is a deficient number, since it is larger than the sum of its proper divisors (25843).

3828257 is a wasteful number, since it uses less digits than its factorization.

3828257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25842.

The product of its digits is 26880, while the sum is 35.

The square root of 3828257 is about 1956.5932127042. The cubic root of 3828257 is about 156.4349166443.

The spelling of 3828257 in words is "three million, eight hundred twenty-eight thousand, two hundred fifty-seven".