78843105 has 32 divisors (see below), whose sum is σ = 152910720. Its totient is φ = 38226240.

The previous prime is 78843091. The next prime is 78843131. The reversal of 78843105 is 50134887.

78843105 is nontrivially palindromic in base 4.

It is not a de Polignac number, because 78843105 - 2⁵ = 78843073 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 78843105.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25062 + ... + 28031.

It is an arithmetic number, because the mean of its divisors is an integer number (4778460).

Almost surely, 2^78843105 is an apocalyptic number.

It is an amenable number.

78843105 is a deficient number, since it is larger than the sum of its proper divisors (74067615).

78843105 is a wasteful number, since it uses less digits than its factorization.

78843105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53118 (or 53112 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 78843105 is about 8879.3639974944. The cubic root of 78843105 is about 428.7997990022.

The spelling of 78843105 in words is "seventy-eight million, eight hundred forty-three thousand, one hundred five".