12207428 has 24 divisors (see below), whose sum is σ = 23353344. Its totient is φ = 5558400.

The previous prime is 12207427. The next prime is 12207431. The reversal of 12207428 is 82470221.

It is a junction number, because it is equal to n+sod(n) for n = 12207397 and 12207406.

It is not an unprimeable number, because it can be changed into a prime (12207427) 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, 788 + ... + 5003.

It is an arithmetic number, because the mean of its divisors is an integer number (973056).

Almost surely, 2^12207428 is an apocalyptic number.

It is an amenable number.

12207428 is a deficient number, since it is larger than the sum of its proper divisors (11145916).

12207428 is a wasteful number, since it uses less digits than its factorization.

12207428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5843 (or 5841 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 12207428 is about 3493.9129926202. The cubic root of 12207428 is about 230.2544631694.

Adding to 12207428 its reverse (82470221), we get a palindrome (94677649).

The spelling of 12207428 in words is "twelve million, two hundred seven thousand, four hundred twenty-eight".