12382155 has 12 divisors (see below), whose sum is σ = 21462480. Its totient is φ = 6603792.

The previous prime is 12382141. The next prime is 12382157. The reversal of 12382155 is 55128321.

It is a happy number.

It is not a de Polignac number, because 12382155 - 2¹¹ = 12380107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12382157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137535 + ... + 137624.

It is an arithmetic number, because the mean of its divisors is an integer number (1788540).

Almost surely, 2^12382155 is an apocalyptic number.

12382155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12382155 is a deficient number, since it is larger than the sum of its proper divisors (9080325).

12382155 is a wasteful number, since it uses less digits than its factorization.

12382155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275170 (or 275167 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 12382155 is about 3518.8286403291. The cubic root of 12382155 is about 231.3478203150.

The spelling of 12382155 in words is "twelve million, three hundred eighty-two thousand, one hundred fifty-five".