78506336 has 24 divisors (see below), whose sum is σ = 154786464. Its totient is φ = 39195520.

The previous prime is 78506293. The next prime is 78506339. The reversal of 78506336 is 63360587.

It is a self number, because there is not a number n which added to its sum of digits gives 78506336.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78506339) 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, 27806 + ... + 30498.

It is an arithmetic number, because the mean of its divisors is an integer number (6449436).

Almost surely, 2^78506336 is an apocalyptic number.

It is an amenable number.

78506336 is a deficient number, since it is larger than the sum of its proper divisors (76280128).

78506336 is a wasteful number, since it uses less digits than its factorization.

78506336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3614 (or 3606 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 78506336 is about 8860.3801272857. The cubic root of 78506336 is about 428.1884051297.

The spelling of 78506336 in words is "seventy-eight million, five hundred six thousand, three hundred thirty-six".