7821352 has 32 divisors (see below), whose sum is σ = 18285120. Its totient is φ = 3047040.

The previous prime is 7821323. The next prime is 7821353. The reversal of 7821352 is 2531287.

It is a super-2 number, since 2×7821352² = 122347094215808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 7821352.

It is not an unprimeable number, because it can be changed into a prime (7821353) 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 7 ways as a sum of consecutive naturals, for example, 5733 + ... + 6964.

It is an arithmetic number, because the mean of its divisors is an integer number (571410).

Almost surely, 2^7821352 is an apocalyptic number.

It is an amenable number.

7821352 is an abundant number, since it is smaller than the sum of its proper divisors (10463768).

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

7821352 is a wasteful number, since it uses less digits than its factorization.

7821352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12721 (or 12717 counting only the distinct ones).

The product of its digits is 3360, while the sum is 28.

The square root of 7821352 is about 2796.6680174808. The cubic root of 7821352 is about 198.5000454712.

The spelling of 7821352 in words is "seven million, eight hundred twenty-one thousand, three hundred fifty-two".