78118888 has 16 divisors (see below), whose sum is σ = 149590080. Its totient is φ = 38228208.

The previous prime is 78118867. The next prime is 78118889. The reversal of 78118888 is 88881187.

It is a super-2 number, since 2×78118888² = 12205121324713088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78118889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103506 + ... + 104257.

It is an arithmetic number, because the mean of its divisors is an integer number (9349380).

Almost surely, 2^78118888 is an apocalyptic number.

It is an amenable number.

78118888 is a deficient number, since it is larger than the sum of its proper divisors (71471192).

78118888 is a wasteful number, since it uses less digits than its factorization.

78118888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207816 (or 207812 counting only the distinct ones).

The product of its digits is 229376, while the sum is 49.

The square root of 78118888 is about 8838.4890111376. The cubic root of 78118888 is about 427.4828382473.

The spelling of 78118888 in words is "seventy-eight million, one hundred eighteen thousand, eight hundred eighty-eight".