13222530 has 24 divisors (see below), whose sum is σ = 34378812. Its totient is φ = 3525984.

The previous prime is 13222511. The next prime is 13222553. The reversal of 13222530 is 3522231.

13222530 is a `hidden beast` number, since 132 + 2 + 2 + 530 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13111641 + 110889 = 3621^2 + 333^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73369 + ... + 73548.

Almost surely, 2^13222530 is an apocalyptic number.

13222530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13222530 is an abundant number, since it is smaller than the sum of its proper divisors (21156282).

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

13222530 is a wasteful number, since it uses less digits than its factorization.

13222530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146930 (or 146927 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 13222530 is about 3636.2796922129. The cubic root of 13222530 is about 236.4675329060.

Adding to 13222530 its reverse (3522231), we get a palindrome (16744761).

The spelling of 13222530 in words is "thirteen million, two hundred twenty-two thousand, five hundred thirty".