78434315 has 8 divisors (see below), whose sum is σ = 94171248. Its totient is φ = 62714080.

The previous prime is 78434269. The next prime is 78434333. The reversal of 78434315 is 51343487.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78434315 - 2²⁰ = 77385739 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11564 + ... + 17046.

It is an arithmetic number, because the mean of its divisors is an integer number (11771406).

Almost surely, 2^78434315 is an apocalyptic number.

78434315 is a deficient number, since it is larger than the sum of its proper divisors (15736933).

78434315 is a wasteful number, since it uses less digits than its factorization.

78434315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8349.

The product of its digits is 40320, while the sum is 35.

The square root of 78434315 is about 8856.3149785901. The cubic root of 78434315 is about 428.0574263499.

The spelling of 78434315 in words is "seventy-eight million, four hundred thirty-four thousand, three hundred fifteen".