12405628 has 12 divisors (see below), whose sum is σ = 21925512. Its totient is φ = 6141200.

The previous prime is 12405623. The next prime is 12405637. The reversal of 12405628 is 82650421.

It is a junction number, because it is equal to n+sod(n) for n = 12405596 and 12405605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12405623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14950 + ... + 15757.

It is an arithmetic number, because the mean of its divisors is an integer number (1827126).

Almost surely, 2^12405628 is an apocalyptic number.

It is an amenable number.

12405628 is a deficient number, since it is larger than the sum of its proper divisors (9519884).

12405628 is a wasteful number, since it uses less digits than its factorization.

12405628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30812 (or 30810 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 12405628 is about 3522.1624039786. The cubic root of 12405628 is about 231.4939176486.

The spelling of 12405628 in words is "twelve million, four hundred five thousand, six hundred twenty-eight".