12151864 has 16 divisors (see below), whose sum is σ = 23060520. Its totient is φ = 6002400.

The previous prime is 12151861. The next prime is 12151891. The reversal of 12151864 is 46815121.

12151864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12151861) 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, 8487 + ... + 9814.

Almost surely, 2^12151864 is an apocalyptic number.

It is an amenable number.

12151864 is a deficient number, since it is larger than the sum of its proper divisors (10908656).

12151864 is a wasteful number, since it uses less digits than its factorization.

12151864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18390 (or 18386 counting only the distinct ones).

The product of its digits is 1920, while the sum is 28.

The square root of 12151864 is about 3485.9523806271. The cubic root of 12151864 is about 229.9045855019.

Adding to 12151864 its reverse (46815121), we get a palindrome (58966985).

The spelling of 12151864 in words is "twelve million, one hundred fifty-one thousand, eight hundred sixty-four".