12487851 has 20 divisors (see below), whose sum is σ = 18796624. Its totient is φ = 8262000.

The previous prime is 12487841. The next prime is 12487861. The reversal of 12487851 is 15878421.

It is an interprime number because it is at equal distance from previous prime (12487841) and next prime (12487861).

It is not a de Polignac number, because 12487851 - 2⁵ = 12487819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12487801) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11721 + ... + 12741.

Almost surely, 2^12487851 is an apocalyptic number.

12487851 is a deficient number, since it is larger than the sum of its proper divisors (6308773).

12487851 is a wasteful number, since it uses less digits than its factorization.

12487851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184 (or 1175 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 12487851 is about 3533.8153602021. The cubic root of 12487851 is about 232.0042297584.

The spelling of 12487851 in words is "twelve million, four hundred eighty-seven thousand, eight hundred fifty-one".