78765160 has 32 divisors (see below), whose sum is σ = 183335400. Its totient is φ = 30419200.

The previous prime is 78765149. The next prime is 78765163. The reversal of 78765160 is 6156787.

It can be written as a sum of positive squares in 4 ways, for example, as 70459236 + 8305924 = 8394^2 + 2882^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (78765163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32791 + ... + 35110.

Almost surely, 2^78765160 is an apocalyptic number.

It is an amenable number.

78765160 is an abundant number, since it is smaller than the sum of its proper divisors (104570240).

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

78765160 is a wasteful number, since it uses less digits than its factorization.

78765160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67941 (or 67937 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 78765160 is about 8874.9738027782. The cubic root of 78765160 is about 428.6584473037.

The spelling of 78765160 in words is "seventy-eight million, seven hundred sixty-five thousand, one hundred sixty".