12400634 has 8 divisors (see below), whose sum is σ = 19409760. Its totient is φ = 5930716.

The previous prime is 12400627. The next prime is 12400643. The reversal of 12400634 is 43600421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134744 + ... + 134835.

It is an arithmetic number, because the mean of its divisors is an integer number (2426220).

Almost surely, 2^12400634 is an apocalyptic number.

12400634 is a deficient number, since it is larger than the sum of its proper divisors (7009126).

12400634 is a wasteful number, since it uses less digits than its factorization.

12400634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269604.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 12400634 is about 3521.4533931319. The cubic root of 12400634 is about 231.4628501420.

The spelling of 12400634 in words is "twelve million, four hundred thousand, six hundred thirty-four".