12151808 has 22 divisors (see below), whose sum is σ = 24293796. Its totient is φ = 6075392.

The previous prime is 12151801. The next prime is 12151823. The reversal of 12151808 is 80815121.

It is not an unprimeable number, because it can be changed into a prime (12151801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4910 + ... + 6957.

Almost surely, 2^12151808 is an apocalyptic number.

It is an amenable number.

12151808 is a deficient number, since it is larger than the sum of its proper divisors (12141988).

12151808 is an equidigital number, since it uses as much as digits as its factorization.

12151808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11887 (or 11869 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 26.

The square root of 12151808 is about 3485.9443483796. The cubic root of 12151808 is about 229.9042323414.

Adding to 12151808 its reverse (80815121), we get a palindrome (92966929).

The spelling of 12151808 in words is "twelve million, one hundred fifty-one thousand, eight hundred eight".