7896321 has 12 divisors (see below), whose sum is σ = 11456640. Its totient is φ = 5240760.

The previous prime is 7896307. The next prime is 7896331. The reversal of 7896321 is 1236987.

It is not a de Polignac number, because 7896321 - 2⁹ = 7895809 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (7896331) 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 11 ways as a sum of consecutive naturals, for example, 316 + ... + 3986.

It is an arithmetic number, because the mean of its divisors is an integer number (954720).

Almost surely, 2^7896321 is an apocalyptic number.

It is an amenable number.

7896321 is a deficient number, since it is larger than the sum of its proper divisors (3560319).

7896321 is a wasteful number, since it uses less digits than its factorization.

7896321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3916 (or 3913 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 7896321 is about 2810.0393235683. The cubic root of 7896321 is about 199.1322488178.

The spelling of 7896321 in words is "seven million, eight hundred ninety-six thousand, three hundred twenty-one".