78736470 has 16 divisors (see below), whose sum is σ = 188967600. Its totient is φ = 20996384.

The previous prime is 78736451. The next prime is 78736487. The reversal of 78736470 is 7463787.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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, 1312245 + ... + 1312304.

It is an arithmetic number, because the mean of its divisors is an integer number (11810475).

Almost surely, 2^78736470 is an apocalyptic number.

78736470 is an abundant number, since it is smaller than the sum of its proper divisors (110231130).

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

78736470 is a wasteful number, since it uses less digits than its factorization.

78736470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2624559.

The product of its (nonzero) digits is 197568, while the sum is 42.

The square root of 78736470 is about 8873.3573127650. The cubic root of 78736470 is about 428.6063950836.

The spelling of 78736470 in words is "seventy-eight million, seven hundred thirty-six thousand, four hundred seventy".