18229512 has 64 divisors (see below), whose sum is σ = 54835200. Its totient is φ = 4933440.

The previous prime is 18229511. The next prime is 18229513. The reversal of 18229512 is 21592281.

It is an interprime number because it is at equal distance from previous prime (18229511) and next prime (18229513).

It is a self number, because there is not a number n which added to its sum of digits gives 18229512.

It is not an unprimeable number, because it can be changed into a prime (18229511) 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, 337 + ... + 6047.

It is an arithmetic number, because the mean of its divisors is an integer number (856800).

Almost surely, 2^18229512 is an apocalyptic number.

18229512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18229512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27417600).

18229512 is an abundant number, since it is smaller than the sum of its proper divisors (36605688).

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

18229512 is a wasteful number, since it uses less digits than its factorization.

18229512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5746 (or 5742 counting only the distinct ones).

The product of its digits is 2880, while the sum is 30.

The square root of 18229512 is about 4269.6032602573. The cubic root of 18229512 is about 263.1833117962.

The spelling of 18229512 in words is "eighteen million, two hundred twenty-nine thousand, five hundred twelve".