13123422 has 48 divisors (see below), whose sum is σ = 32432400. Its totient is φ = 3799296.

The previous prime is 13123393. The next prime is 13123423. The reversal of 13123422 is 22432131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13123395 and 13123404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123423) 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, 2329 + ... + 5627.

It is an arithmetic number, because the mean of its divisors is an integer number (675675).

Almost surely, 2^13123422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13123422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16216200).

13123422 is an abundant number, since it is smaller than the sum of its proper divisors (19308978).

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

13123422 is a wasteful number, since it uses less digits than its factorization.

13123422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3337 (or 3334 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 13123422 is about 3622.6263953105. The cubic root of 13123422 is about 235.8752452768.

Adding to 13123422 its reverse (22432131), we get a palindrome (35555553).

The spelling of 13123422 in words is "thirteen million, one hundred twenty-three thousand, four hundred twenty-two".