12387380 has 18 divisors (see below), whose sum is σ = 26046594. Its totient is φ = 4948656.

The previous prime is 12387377. The next prime is 12387433. The reversal of 12387380 is 8378321.

It can be written as a sum of positive squares in only one way, i.e., 9909904 + 2477476 = 3148^2 + 1574^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15347 + ... + 16133.

It is an arithmetic number, because the mean of its divisors is an integer number (1447033).

Almost surely, 2^12387380 is an apocalyptic number.

12387380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12387380 is an abundant number, since it is smaller than the sum of its proper divisors (13659214).

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

12387380 is an frugal number, since it uses more digits than its factorization.

12387380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583 (or 794 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 12387380 is about 3519.5709965847. The cubic root of 12387380 is about 231.3803569877.

The spelling of 12387380 in words is "twelve million, three hundred eighty-seven thousand, three hundred eighty".