12406851 has 36 divisors (see below), whose sum is σ = 19524544. Its totient is φ = 7873200.

The previous prime is 12406847. The next prime is 12406883. The reversal of 12406851 is 15860421.

It is not a de Polignac number, because 12406851 - 2² = 12406847 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12406811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 203361 + ... + 203421.

Almost surely, 2^12406851 is an apocalyptic number.

12406851 is a deficient number, since it is larger than the sum of its proper divisors (7117693).

12406851 is an frugal number, since it uses more digits than its factorization.

12406851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 12406851 is about 3522.3360146357. The cubic root of 12406851 is about 231.5015246196.

The spelling of 12406851 in words is "twelve million, four hundred six thousand, eight hundred fifty-one".