7821296 has 20 divisors (see below), whose sum is σ = 17318832. Its totient is φ = 3351936.

The previous prime is 7821287. The next prime is 7821299. The reversal of 7821296 is 6921287.

It is a happy number.

It is a super-2 number, since 2×7821296² = 122345342239232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7821299) 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, 34805 + ... + 35028.

Almost surely, 2^7821296 is an apocalyptic number.

It is an amenable number.

7821296 is an abundant number, since it is smaller than the sum of its proper divisors (9497536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7821296 is a wasteful number, since it uses less digits than its factorization.

7821296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69848 (or 69842 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

The square root of 7821296 is about 2796.6580055488. The cubic root of 7821296 is about 198.4995717240.

Subtracting from 7821296 its reverse (6921287), we obtain a palindrome (900009).

The spelling of 7821296 in words is "seven million, eight hundred twenty-one thousand, two hundred ninety-six".