12812426 has 16 divisors (see below), whose sum is σ = 21878208. Its totient is φ = 5570400.

The previous prime is 12812419. The next prime is 12812473. The reversal of 12812426 is 62421821.

12812426 = T₁₀₄₄ + T₁₀₄₅ + ... + T₁₀₆₆.

It is a happy number.

It is a Curzon number.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 12812395 and 12812404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12155 + ... + 13166.

It is an arithmetic number, because the mean of its divisors is an integer number (1367388).

Almost surely, 2^12812426 is an apocalyptic number.

12812426 is a deficient number, since it is larger than the sum of its proper divisors (9065782).

12812426 is a wasteful number, since it uses less digits than its factorization.

12812426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25357.

The product of its digits is 1536, while the sum is 26.

The square root of 12812426 is about 3579.4449290358. Note that the first 3 decimals coincide. The cubic root of 12812426 is about 233.9970900848.

The spelling of 12812426 in words is "twelve million, eight hundred twelve thousand, four hundred twenty-six".