12219648 has 72 divisors (see below), whose sum is σ = 37184448. Its totient is φ = 3489792.

The previous prime is 12219631. The next prime is 12219653. The reversal of 12219648 is 84691221.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4240 + ... + 6512.

Almost surely, 2^12219648 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 12219648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18592224).

12219648 is an abundant number, since it is smaller than the sum of its proper divisors (24964800).

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

12219648 is an equidigital number, since it uses as much as digits as its factorization.

12219648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2299 (or 2285 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 12219648 is about 3495.6613108252. The cubic root of 12219648 is about 230.3312680785.

The spelling of 12219648 in words is "twelve million, two hundred nineteen thousand, six hundred forty-eight".