12138760 has 16 divisors (see below), whose sum is σ = 27312300. Its totient is φ = 4855488.

The previous prime is 12138743. The next prime is 12138761. The reversal of 12138760 is 6783121.

It can be written as a sum of positive squares in 2 ways, for example, as 10797796 + 1340964 = 3286^2 + 1158^2 .

It is not an unprimeable number, because it can be changed into a prime (12138761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151695 + ... + 151774.

Almost surely, 2^12138760 is an apocalyptic number.

12138760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12138760 is an abundant number, since it is smaller than the sum of its proper divisors (15173540).

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

12138760 is a wasteful number, since it uses less digits than its factorization.

12138760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303480 (or 303476 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 12138760 is about 3484.0723299036. The cubic root of 12138760 is about 229.8219163398.

The spelling of 12138760 in words is "twelve million, one hundred thirty-eight thousand, seven hundred sixty".