12487886 has 4 divisors (see below), whose sum is σ = 18731832. Its totient is φ = 6243942.

The previous prime is 12487861. The next prime is 12487889. The reversal of 12487886 is 68878421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68878421 = 163 ⋅422567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12487889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3121970 + ... + 3121973.

It is an arithmetic number, because the mean of its divisors is an integer number (4682958).

Almost surely, 2^12487886 is an apocalyptic number.

12487886 is a deficient number, since it is larger than the sum of its proper divisors (6243946).

12487886 is an equidigital number, since it uses as much as digits as its factorization.

12487886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6243945.

The product of its digits is 172032, while the sum is 44.

The square root of 12487886 is about 3533.8203123532. The cubic root of 12487886 is about 232.0044465061.

The spelling of 12487886 in words is "twelve million, four hundred eighty-seven thousand, eight hundred eighty-six".