12487120 has 20 divisors (see below), whose sum is σ = 29032740. Its totient is φ = 4994816.

The previous prime is 12487109. The next prime is 12487133. The reversal of 12487120 is 2178421.

It is a happy number.

12487120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9784384 + 2702736 = 3128^2 + 1644^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77965 + ... + 78124.

It is an arithmetic number, because the mean of its divisors is an integer number (1451637).

Almost surely, 2^12487120 is an apocalyptic number.

12487120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12487120 is an abundant number, since it is smaller than the sum of its proper divisors (16545620).

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

12487120 is a wasteful number, since it uses less digits than its factorization.

12487120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156102 (or 156096 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 12487120 is about 3533.7119294023. The cubic root of 12487120 is about 231.9997027345. Note that the first 3 decimals are identical.

The spelling of 12487120 in words is "twelve million, four hundred eighty-seven thousand, one hundred twenty".