12722424 has 96 divisors (see below), whose sum is σ = 37761360. Its totient is φ = 3548160.

The previous prime is 12722417. The next prime is 12722447. The reversal of 12722424 is 42422721.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

12722424 is a modest number, since divided by 2424 gives 1272 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 12722394 and 12722403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37584 + ... + 37920.

Almost surely, 2^12722424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12722424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18880680).

12722424 is an abundant number, since it is smaller than the sum of its proper divisors (25038936).

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

12722424 is a wasteful number, since it uses less digits than its factorization.

12722424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 366 counting only the distinct ones).

The product of its digits is 1792, while the sum is 24.

The square root of 12722424 is about 3566.8507117624. The cubic root of 12722424 is about 233.4478911396.

The spelling of 12722424 in words is "twelve million, seven hundred twenty-two thousand, four hundred twenty-four".