8021726 has 8 divisors (see below), whose sum is σ = 12086280. Its totient is φ = 3992968.

The previous prime is 8021681. The next prime is 8021729. The reversal of 8021726 is 6271208.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8021695 and 8021704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8021729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8381 + ... + 9288.

It is an arithmetic number, because the mean of its divisors is an integer number (1510785).

Almost surely, 2^8021726 is an apocalyptic number.

8021726 is a deficient number, since it is larger than the sum of its proper divisors (4064554).

8021726 is a wasteful number, since it uses less digits than its factorization.

8021726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17898.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 8021726 is about 2832.2651712013. The cubic root of 8021726 is about 200.1808863513.

The spelling of 8021726 in words is "eight million, twenty-one thousand, seven hundred twenty-six".