12722262 has 48 divisors (see below), whose sum is σ = 29945520. Its totient is φ = 3592512.

The previous prime is 12722261. The next prime is 12722287. The reversal of 12722262 is 26222721.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12722261) 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, 31848 + ... + 32244.

It is an arithmetic number, because the mean of its divisors is an integer number (623865).

Almost surely, 2^12722262 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12722262, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14972760).

12722262 is an abundant number, since it is smaller than the sum of its proper divisors (17223258).

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

12722262 is a wasteful number, since it uses less digits than its factorization.

12722262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525 (or 518 counting only the distinct ones).

The product of its digits is 1344, while the sum is 24.

The square root of 12722262 is about 3566.8280025816. The cubic root of 12722262 is about 233.4469002718.

Adding to 12722262 its reverse (26222721), we get a palindrome (38944983).

It can be divided in two parts, 1272226 and 2, that multiplied together give a palindrome (2544452).

The spelling of 12722262 in words is "twelve million, seven hundred twenty-two thousand, two hundred sixty-two".