78888886 has 8 divisors (see below), whose sum is σ = 118435464. Its totient is φ = 39410400.

The previous prime is 78888871. The next prime is 78888911. The reversal of 78888886 is 68888887.

It is a happy number.

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, 14020 + ... + 18823.

It is an arithmetic number, because the mean of its divisors is an integer number (14804433).

Almost surely, 2^78888886 is an apocalyptic number.

78888886 is a deficient number, since it is larger than the sum of its proper divisors (39546578).

78888886 is a wasteful number, since it uses less digits than its factorization.

78888886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34046.

The product of its digits is 11010048, while the sum is 61.

The square root of 78888886 is about 8881.9415670224. The cubic root of 78888886 is about 428.8827785061.

Subtracting from 78888886 its reverse (68888887), we obtain a palindrome (9999999).

The spelling of 78888886 in words is "seventy-eight million, eight hundred eighty-eight thousand, eight hundred eighty-six".