11722722 has 48 divisors (see below), whose sum is σ = 26263776. Its totient is φ = 3484800.

The previous prime is 11722721. The next prime is 11722723. The reversal of 11722722 is 22722711.

It is an interprime number because it is at equal distance from previous prime (11722721) and next prime (11722723).

It is a super-2 number, since 2×11722722² = 274844422178568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11722692 and 11722701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11722721) 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, 48522 + ... + 48762.

It is an arithmetic number, because the mean of its divisors is an integer number (547162).

Almost surely, 2^11722722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11722722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13131888).

11722722 is an abundant number, since it is smaller than the sum of its proper divisors (14541054).

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

11722722 is a wasteful number, since it uses less digits than its factorization.

11722722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335 (or 324 counting only the distinct ones).

The product of its digits is 784, while the sum is 24.

The square root of 11722722 is about 3423.8460829891. The cubic root of 11722722 is about 227.1657337936.

The spelling of 11722722 in words is "eleven million, seven hundred twenty-two thousand, seven hundred twenty-two".