7320726 has 64 divisors (see below), whose sum is σ = 18869760. Its totient is φ = 2060640.

The previous prime is 7320721. The next prime is 7320737. The reversal of 7320726 is 6270237.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7320726.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7320721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40356 + ... + 40536.

It is an arithmetic number, because the mean of its divisors is an integer number (294840).

Almost surely, 2^7320726 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7320726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9434880).

7320726 is an abundant number, since it is smaller than the sum of its proper divisors (11549034).

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

7320726 is a wasteful number, since it uses less digits than its factorization.

7320726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 300 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 7320726 is about 2705.6840170279. The cubic root of 7320726 is about 194.1711565659.

The spelling of 7320726 in words is "seven million, three hundred twenty thousand, seven hundred twenty-six".