13623222 has 32 divisors (see below), whose sum is σ = 30108672. Its totient is φ = 4087424.

The previous prime is 13623179. The next prime is 13623223. The reversal of 13623222 is 22232631.

It is a super-2 number, since 2×13623222² = 371184355322568, which contains 22 as substring.

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 (13623223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 558 + ... + 5249.

It is an arithmetic number, because the mean of its divisors is an integer number (940896).

Almost surely, 2^13623222 is an apocalyptic number.

13623222 is an abundant number, since it is smaller than the sum of its proper divisors (16485450).

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

13623222 is a wasteful number, since it uses less digits than its factorization.

13623222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5852.

The product of its digits is 864, while the sum is 21.

The square root of 13623222 is about 3690.9649144905. The cubic root of 13623222 is about 238.8324193028.

Adding to 13623222 its reverse (22232631), we get a palindrome (35855853).

The spelling of 13623222 in words is "thirteen million, six hundred twenty-three thousand, two hundred twenty-two".