78118936 has 56 divisors (see below), whose sum is σ = 172943820. Its totient is φ = 33076176.

The previous prime is 78118919. The next prime is 78118967. The reversal of 78118936 is 63981187.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×78118936² = 12205136323544192, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78118892 and 78118901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 941151 + ... + 941233.

Almost surely, 2^78118936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78118936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86471910).

78118936 is an abundant number, since it is smaller than the sum of its proper divisors (94824884).

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

78118936 is an frugal number, since it uses more digits than its factorization.

78118936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 92 counting only the distinct ones).

The product of its digits is 72576, while the sum is 43.

The square root of 78118936 is about 8838.4917265334. The cubic root of 78118936 is about 427.4829258026.

The spelling of 78118936 in words is "seventy-eight million, one hundred eighteen thousand, nine hundred thirty-six".