7878894 has 16 divisors (see below), whose sum is σ = 16301520. Its totient is φ = 2535680.

The previous prime is 7878887. The next prime is 7878911. The reversal of 7878894 is 4988787.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22467 + ... + 22814.

It is an arithmetic number, because the mean of its divisors is an integer number (1018845).

Almost surely, 2^7878894 is an apocalyptic number.

7878894 is an abundant number, since it is smaller than the sum of its proper divisors (8422626).

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

7878894 is a wasteful number, since it uses less digits than its factorization.

7878894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45315.

The product of its digits is 903168, while the sum is 51.

The square root of 7878894 is about 2806.9367645175. The cubic root of 7878894 is about 198.9856474754.

The spelling of 7878894 in words is "seven million, eight hundred seventy-eight thousand, eight hundred ninety-four".