12008155 has 8 divisors (see below), whose sum is σ = 14646384. Its totient is φ = 9448800.

The previous prime is 12008149. The next prime is 12008167. The reversal of 12008155 is 55180021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12008155 - 2⁷ = 12008027 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19381 + ... + 19990.

It is an arithmetic number, because the mean of its divisors is an integer number (1830798).

Almost surely, 2^12008155 is an apocalyptic number.

12008155 is a deficient number, since it is larger than the sum of its proper divisors (2638229).

12008155 is an equidigital number, since it uses as much as digits as its factorization.

12008155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39437.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 12008155 is about 3465.2784880872. The cubic root of 12008155 is about 228.9946986816.

Adding to 12008155 its reverse (55180021), we get a palindrome (67188176).

The spelling of 12008155 in words is "twelve million, eight thousand, one hundred fifty-five".