78911104 has 64 divisors (see below), whose sum is σ = 168177600. Its totient is φ = 36771840.

The previous prime is 78911099. The next prime is 78911191. The reversal of 78911104 is 40111987.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172444 + ... + 172900.

It is an arithmetic number, because the mean of its divisors is an integer number (2627775).

Almost surely, 2^78911104 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 78911104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84088800).

78911104 is an abundant number, since it is smaller than the sum of its proper divisors (89266496).

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

78911104 is a wasteful number, since it uses less digits than its factorization.

78911104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561 (or 549 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 78911104 is about 8883.1922190168. The cubic root of 78911104 is about 428.9230377603.

The spelling of 78911104 in words is "seventy-eight million, nine hundred eleven thousand, one hundred four".