7878284 has 12 divisors (see below), whose sum is σ = 13810944. Its totient is φ = 3932304.

The previous prime is 7878271. The next prime is 7878289. The reversal of 7878284 is 4828787.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (7878289) 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, 1589 + ... + 4275.

It is an arithmetic number, because the mean of its divisors is an integer number (1150912).

Almost surely, 2^7878284 is an apocalyptic number.

It is an amenable number.

7878284 is a deficient number, since it is larger than the sum of its proper divisors (5932660).

7878284 is a wasteful number, since it uses less digits than its factorization.

7878284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3424 (or 3422 counting only the distinct ones).

The product of its digits is 200704, while the sum is 44.

The square root of 7878284 is about 2806.8281030373. The cubic root of 7878284 is about 198.9805120517.

The spelling of 7878284 in words is "seven million, eight hundred seventy-eight thousand, two hundred eighty-four".