12400330 has 16 divisors (see below), whose sum is σ = 22372704. Its totient is φ = 4948560.

The previous prime is 12400309. The next prime is 12400343. The reversal of 12400330 is 3300421.

It is a self number, because there is not a number n which added to its sum of digits gives 12400330.

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, 4045 + ... + 6415.

It is an arithmetic number, because the mean of its divisors is an integer number (1398294).

Almost surely, 2^12400330 is an apocalyptic number.

12400330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12400330 is a deficient number, since it is larger than the sum of its proper divisors (9972374).

12400330 is a wasteful number, since it uses less digits than its factorization.

12400330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2901.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 12400330 is about 3521.4102288714. The cubic root of 12400330 is about 231.4609586989.

Adding to 12400330 its reverse (3300421), we get a palindrome (15700751).

Subtracting from 12400330 its reverse (3300421), we obtain a palindrome (9099909).

The spelling of 12400330 in words is "twelve million, four hundred thousand, three hundred thirty".