78318316 has 12 divisors (see below), whose sum is σ = 138388432. Its totient is φ = 38778768.

The previous prime is 78318313. The next prime is 78318319. The reversal of 78318316 is 61381387.

It is an interprime number because it is at equal distance from previous prime (78318313) and next prime (78318319).

It is a super-2 number, since 2×78318316² = 12267517242151712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78318313) 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 3 ways as a sum of consecutive naturals, for example, 94635 + ... + 95458.

Almost surely, 2^78318316 is an apocalyptic number.

It is an amenable number.

78318316 is a deficient number, since it is larger than the sum of its proper divisors (60070116).

78318316 is a wasteful number, since it uses less digits than its factorization.

78318316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190200 (or 190198 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 78318316 is about 8849.7636126622. The cubic root of 78318316 is about 427.8462996599.

The spelling of 78318316 in words is "seventy-eight million, three hundred eighteen thousand, three hundred sixteen".