12531678 has 32 divisors (see below), whose sum is σ = 27104640. Its totient is φ = 3849120.

The previous prime is 12531671. The next prime is 12531689. The reversal of 12531678 is 87613521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12531671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2733 + ... + 5703.

It is an arithmetic number, because the mean of its divisors is an integer number (847020).

Almost surely, 2^12531678 is an apocalyptic number.

12531678 is an abundant number, since it is smaller than the sum of its proper divisors (14572962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12531678 is a wasteful number, since it uses less digits than its factorization.

12531678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3032.

The product of its digits is 10080, while the sum is 33.

The square root of 12531678 is about 3540.0110169320. The cubic root of 12531678 is about 232.2753246370.

The spelling of 12531678 in words is "twelve million, five hundred thirty-one thousand, six hundred seventy-eight".