18229252 has 12 divisors (see below), whose sum is σ = 31933440. Its totient is φ = 9105416.

The previous prime is 18229243. The next prime is 18229259. The reversal of 18229252 is 25292281.

It is not an unprimeable number, because it can be changed into a prime (18229259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4173 + ... + 7339.

It is an arithmetic number, because the mean of its divisors is an integer number (2661120).

Almost surely, 2^18229252 is an apocalyptic number.

It is an amenable number.

18229252 is a deficient number, since it is larger than the sum of its proper divisors (13704188).

18229252 is a wasteful number, since it uses less digits than its factorization.

18229252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4610 (or 4608 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 18229252 is about 4269.5728123549. The cubic root of 18229252 is about 263.1820605653.

It can be divided in two parts, 18229 and 252, that added together give a palindrome (18481).

The spelling of 18229252 in words is "eighteen million, two hundred twenty-nine thousand, two hundred fifty-two".