12247620 has 144 divisors (see below), whose sum is σ = 43257984. Its totient is φ = 2534400.

The previous prime is 12247619. The next prime is 12247637. The reversal of 12247620 is 2674221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50700 + ... + 50940.

Almost surely, 2^12247620 is an apocalyptic number.

12247620 is a gapful number since it is divisible by the number (10) 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 12247620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21628992).

12247620 is an abundant number, since it is smaller than the sum of its proper divisors (31010364).

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

12247620 is a wasteful number, since it uses less digits than its factorization.

12247620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 12247620 is about 3499.6599834841. The cubic root of 12247620 is about 230.5068846042.

The spelling of 12247620 in words is "twelve million, two hundred forty-seven thousand, six hundred twenty".