7816241 has 4 divisors (see below), whose sum is σ = 7982592. Its totient is φ = 7649892.

The previous prime is 7816219. The next prime is 7816253. The reversal of 7816241 is 1426187.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7816241 is a prime.

It is a super-2 number, since 2×7816241² = 122187246740162, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (7816271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83105 + ... + 83198.

It is an arithmetic number, because the mean of its divisors is an integer number (1995648).

Almost surely, 2^7816241 is an apocalyptic number.

It is an amenable number.

7816241 is a deficient number, since it is larger than the sum of its proper divisors (166351).

7816241 is a wasteful number, since it uses less digits than its factorization.

7816241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166350.

The product of its digits is 2688, while the sum is 29.

The square root of 7816241 is about 2795.7541022057. The cubic root of 7816241 is about 198.4567982678.

The spelling of 7816241 in words is "seven million, eight hundred sixteen thousand, two hundred forty-one".