12651878 has 16 divisors (see below), whose sum is σ = 19388160. Its totient is φ = 6190536.

The previous prime is 12651871. The next prime is 12651887. The reversal of 12651878 is 87815621.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12651871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35063 + ... + 35421.

It is an arithmetic number, because the mean of its divisors is an integer number (1211760).

Almost surely, 2^12651878 is an apocalyptic number.

12651878 is a deficient number, since it is larger than the sum of its proper divisors (6736282).

12651878 is a wasteful number, since it uses less digits than its factorization.

12651878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691.

The product of its digits is 26880, while the sum is 38.

The square root of 12651878 is about 3556.9478489289. The cubic root of 12651878 is about 233.0156006427.

The spelling of 12651878 in words is "twelve million, six hundred fifty-one thousand, eight hundred seventy-eight".