8720726 has 48 divisors (see below), whose sum is σ = 16399584. Its totient is φ = 3459456.

The previous prime is 8720713. The next prime is 8720729. The reversal of 8720726 is 6270278.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 8720692 and 8720701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8720729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119426 + ... + 119498.

It is an arithmetic number, because the mean of its divisors is an integer number (341658).

Almost surely, 2^8720726 is an apocalyptic number.

8720726 is a deficient number, since it is larger than the sum of its proper divisors (7678858).

8720726 is a wasteful number, since it uses less digits than its factorization.

8720726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 8720726 is about 2953.0875367994. The cubic root of 8720726 is about 205.8342053686.

The spelling of 8720726 in words is "eight million, seven hundred twenty thousand, seven hundred twenty-six".