12247480 has 128 divisors (see below), whose sum is σ = 34836480. Its totient is φ = 3778560.

The previous prime is 12247471. The next prime is 12247507. The reversal of 12247480 is 8474221.

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

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 147519 + ... + 147601.

It is an arithmetic number, because the mean of its divisors is an integer number (272160).

Almost surely, 2^12247480 is an apocalyptic number.

12247480 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 12247480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17418240).

12247480 is an abundant number, since it is smaller than the sum of its proper divisors (22589000).

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

12247480 is a wasteful number, since it uses less digits than its factorization.

12247480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 12247480 is about 3499.6399814838. The cubic root of 12247480 is about 230.5060063087.

The spelling of 12247480 in words is "twelve million, two hundred forty-seven thousand, four hundred eighty".