13223430 has 144 divisors (see below), whose sum is σ = 40654224. Its totient is φ = 2954880.

The previous prime is 13223423. The next prime is 13223437. The reversal of 13223430 is 3432231.

13223430 is a `hidden beast` number, since 1 + 322 + 343 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (13223423) and next prime (13223437).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13223437) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 357372 + ... + 357408.

It is an arithmetic number, because the mean of its divisors is an integer number (282321).

Almost surely, 2^13223430 is an apocalyptic number.

13223430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13223430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20327112).

13223430 is an abundant number, since it is smaller than the sum of its proper divisors (27430794).

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

13223430 is a wasteful number, since it uses less digits than its factorization.

13223430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 13223430 is about 3636.4034429639. The cubic root of 13223430 is about 236.4728978891.

Adding to 13223430 its reverse (3432231), we get a palindrome (16655661).

The spelling of 13223430 in words is "thirteen million, two hundred twenty-three thousand, four hundred thirty".