78888888 has 96 divisors (see below), whose sum is σ = 232923600. Its totient is φ = 23975424.

The previous prime is 78888871. The next prime is 78888911. The reversal of 78888888 is 88888887.

78888888 is a modest number, since divided by 8888 gives 7888 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82831 + ... + 83777.

Almost surely, 2^78888888 is an apocalyptic number.

78888888 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78888888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116461800).

78888888 is an abundant number, since it is smaller than the sum of its proper divisors (154034712).

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

78888888 is a wasteful number, since it uses less digits than its factorization.

78888888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061 (or 1054 counting only the distinct ones).

The product of its digits is 14680064, while the sum is 63.

The square root of 78888888 is about 8881.9416796104. The cubic root of 78888888 is about 428.8827821304.

Subtracting 78888888 from its reverse (88888887), we obtain a palindrome (9999999).

It can be divided in two parts, 788 and 88888, that added together give a triangular number (89676 = T₄₂₃).

The spelling of 78888888 in words is "seventy-eight million, eight hundred eighty-eight thousand, eight hundred eighty-eight".