78908814 has 36 divisors (see below), whose sum is σ = 178747296. Its totient is φ = 25156296.

The previous prime is 78908813. The next prime is 78908833. The reversal of 78908814 is 41880987.

It is a self number, because there is not a number n which added to its sum of digits gives 78908814.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78908813) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5379 + ... + 13665.

Almost surely, 2^78908814 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78908814, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89373648).

78908814 is an abundant number, since it is smaller than the sum of its proper divisors (99838482).

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

78908814 is a wasteful number, since it uses less digits than its factorization.

78908814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8341 (or 8315 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 78908814 is about 8883.0633229759. The cubic root of 78908814 is about 428.9188886050.

The spelling of 78908814 in words is "seventy-eight million, nine hundred eight thousand, eight hundred fourteen".