12651434 has 16 divisors (see below), whose sum is σ = 20192328. Its totient is φ = 5924352.

The previous prime is 12651433. The next prime is 12651437. The reversal of 12651434 is 43415621.

It can be written as a sum of positive squares in 4 ways, for example, as 9030025 + 3621409 = 3005^2 + 1903^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12651433) 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, 7124 + ... + 8720.

Almost surely, 2^12651434 is an apocalyptic number.

12651434 is a deficient number, since it is larger than the sum of its proper divisors (7540894).

12651434 is a wasteful number, since it uses less digits than its factorization.

12651434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849.

The product of its digits is 2880, while the sum is 26.

The square root of 12651434 is about 3556.8854353212. The cubic root of 12651434 is about 233.0128748250.

It can be divided in two parts, 126514 and 34, that multiplied together give a square (4301476 = 2074²).

The spelling of 12651434 in words is "twelve million, six hundred fifty-one thousand, four hundred thirty-four".