12147750 has 48 divisors (see below), whose sum is σ = 32853600. Its totient is φ = 3238800.

The previous prime is 12147743. The next prime is 12147769. The reversal of 12147750 is 5774121.

12147750 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 450 + ... + 4949.

It is an arithmetic number, because the mean of its divisors is an integer number (684450).

Almost surely, 2^12147750 is an apocalyptic number.

12147750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12147750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16426800).

12147750 is an abundant number, since it is smaller than the sum of its proper divisors (20705850).

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

12147750 is a wasteful number, since it uses less digits than its factorization.

12147750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5422 (or 5409 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 12147750 is about 3485.3622480310. The cubic root of 12147750 is about 229.8786379266.

The spelling of 12147750 in words is "twelve million, one hundred forty-seven thousand, seven hundred fifty".