12400346 has 16 divisors (see below), whose sum is σ = 21337344. Its totient is φ = 5294544.

The previous prime is 12400343. The next prime is 12400373. The reversal of 12400346 is 64300421.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12400343) 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, 2591 + ... + 5613.

It is an arithmetic number, because the mean of its divisors is an integer number (1333584).

Almost surely, 2^12400346 is an apocalyptic number.

12400346 is a deficient number, since it is larger than the sum of its proper divisors (8936998).

12400346 is a wasteful number, since it uses less digits than its factorization.

12400346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3325.

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

The square root of 12400346 is about 3521.4125006878. The cubic root of 12400346 is about 231.4610582493.

Adding to 12400346 its reverse (64300421), we get a palindrome (76700767).

The spelling of 12400346 in words is "twelve million, four hundred thousand, three hundred forty-six".