78682736 has 40 divisors (see below), whose sum is σ = 168441600. Its totient is φ = 35305920.

The previous prime is 78682729. The next prime is 78682739. The reversal of 78682736 is 63728687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78682739) by changing a digit.

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, 11075 + ... + 16733.

It is an arithmetic number, because the mean of its divisors is an integer number (4211040).

Almost surely, 2^78682736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78682736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84220800).

78682736 is an abundant number, since it is smaller than the sum of its proper divisors (89758864).

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

78682736 is a wasteful number, since it uses less digits than its factorization.

78682736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5757 (or 5751 counting only the distinct ones).

The product of its digits is 677376, while the sum is 47.

The square root of 78682736 is about 8870.3289679696. The cubic root of 78682736 is about 428.5088715465.

The spelling of 78682736 in words is "seventy-eight million, six hundred eighty-two thousand, seven hundred thirty-six".