78786414 has 60 divisors (see below), whose sum is σ = 199251936. Its totient is φ = 22498056.

The previous prime is 78786397. The next prime is 78786419. The reversal of 78786414 is 41468787.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 78786414.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78786419) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 42307 + ... + 44129.

Almost surely, 2^78786414 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78786414, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99625968).

78786414 is an abundant number, since it is smaller than the sum of its proper divisors (120465522).

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

78786414 is a wasteful number, since it uses less digits than its factorization.

78786414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1859 (or 1835 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 78786414 is about 8876.1711339969. The cubic root of 78786414 is about 428.6970002514.

The spelling of 78786414 in words is "seventy-eight million, seven hundred eighty-six thousand, four hundred fourteen".