7122726 has 48 divisors (see below), whose sum is σ = 16926000. Its totient is φ = 2151360.

The previous prime is 7122721. The next prime is 7122733. The reversal of 7122726 is 6272217.

It is a self number, because there is not a number n which added to its sum of digits gives 7122726.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7122721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14025 + ... + 14523.

It is an arithmetic number, because the mean of its divisors is an integer number (352625).

Almost surely, 2^7122726 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7122726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8463000).

7122726 is an abundant number, since it is smaller than the sum of its proper divisors (9803274).

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

7122726 is a wasteful number, since it uses less digits than its factorization.

7122726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581 (or 578 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 7122726 is about 2668.8435697882. The cubic root of 7122726 is about 192.4045830603.

It can be divided in two parts, 71227 and 26, that added together give a triangular number (71253 = T₃₇₇).

The spelling of 7122726 in words is "seven million, one hundred twenty-two thousand, seven hundred twenty-six".