7988878 has 8 divisors (see below), whose sum is σ = 12688272. Its totient is φ = 3759456.

The previous prime is 7988857. The next prime is 7988899. The reversal of 7988878 is 8788897.

It is an interprime number because it is at equal distance from previous prime (7988857) and next prime (7988899).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117450 + ... + 117517.

It is an arithmetic number, because the mean of its divisors is an integer number (1586034).

Almost surely, 2^7988878 is an apocalyptic number.

7988878 is a deficient number, since it is larger than the sum of its proper divisors (4699394).

7988878 is a wasteful number, since it uses less digits than its factorization.

7988878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234986.

The product of its digits is 1806336, while the sum is 55.

The square root of 7988878 is about 2826.4603305194. The cubic root of 7988878 is about 199.9072736825.

The spelling of 7988878 in words is "seven million, nine hundred eighty-eight thousand, eight hundred seventy-eight".