12720750 has 64 divisors (see below), whose sum is σ = 36301824. Its totient is φ = 2906400.

The previous prime is 12720737. The next prime is 12720751. The reversal of 12720750 is 5702721.

It is a self number, because there is not a number n which added to its sum of digits gives 12720750.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12720751) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 4039 + ... + 6461.

It is an arithmetic number, because the mean of its divisors is an integer number (567216).

Almost surely, 2^12720750 is an apocalyptic number.

12720750 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 12720750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18150912).

12720750 is an abundant number, since it is smaller than the sum of its proper divisors (23581074).

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

12720750 is a wasteful number, since it uses less digits than its factorization.

12720750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2450 (or 2440 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 12720750 is about 3566.6160432544. The cubic root of 12720750 is about 233.4376517672.

The spelling of 12720750 in words is "twelve million, seven hundred twenty thousand, seven hundred fifty".