12219508 has 48 divisors (see below), whose sum is σ = 26091520. Its totient is φ = 4891104.

The previous prime is 12219503. The next prime is 12219511. The reversal of 12219508 is 80591221.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12219503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54685 + ... + 54907.

Almost surely, 2^12219508 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12219508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13045760).

12219508 is an abundant number, since it is smaller than the sum of its proper divisors (13872012).

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

12219508 is a wasteful number, since it uses less digits than its factorization.

12219508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 12219508 is about 3495.6412859445. The cubic root of 12219508 is about 230.3303884432.

The spelling of 12219508 in words is "twelve million, two hundred nineteen thousand, five hundred eight".