7828241 has 4 divisors (see below), whose sum is σ = 7845684. Its totient is φ = 7810800.

The previous prime is 7828237. The next prime is 7828243. The reversal of 7828241 is 1428287.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5664400 + 2163841 = 2380^2 + 1471^2 .

It is a cyclic number.

It is not a de Polignac number, because 7828241 - 2² = 7828237 is a prime.

It is a super-2 number, since 2×7828241² = 122562714308162, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 7828198 and 7828207.

It is not an unprimeable number, because it can be changed into a prime (7828243) 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 3 ways as a sum of consecutive naturals, for example, 8030 + ... + 8951.

It is an arithmetic number, because the mean of its divisors is an integer number (1961421).

Almost surely, 2^7828241 is an apocalyptic number.

It is an amenable number.

7828241 is a deficient number, since it is larger than the sum of its proper divisors (17443).

7828241 is a wasteful number, since it uses less digits than its factorization.

7828241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17442.

The product of its digits is 7168, while the sum is 32.

The square root of 7828241 is about 2797.8993906143. The cubic root of 7828241 is about 198.5583075860.

The spelling of 7828241 in words is "seven million, eight hundred twenty-eight thousand, two hundred forty-one".