78726 has 8 divisors (see below), whose sum is σ = 157464. Its totient is φ = 26240.

The previous prime is 78721. The next prime is 78737. The reversal of 78726 is 62787.

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

78726 is an admirable number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 78693 and 78702.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 78726.

It is not an unprimeable number, because it can be changed into a prime (78721) by changing a digit.

78726 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6555 + ... + 6566.

It is an arithmetic number, because the mean of its divisors is an integer number (19683).

2⁷⁸⁷²⁶ is an apocalyptic number.

78726 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78732).

78726 is a wasteful number, since it uses less digits than its factorization.

78726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13126.

The product of its digits is 4704, while the sum is 30.

The square root of 78726 is about 280.5815389508. The cubic root of 78726 is about 42.8587396230.

The spelling of 78726 in words is "seventy-eight thousand, seven hundred twenty-six".