12445428 has 24 divisors (see below), whose sum is σ = 30748032. Its totient is φ = 3904384.

The previous prime is 12445417. The next prime is 12445439. The reversal of 12445428 is 82454421.

It is an interprime number because it is at equal distance from previous prime (12445417) and next prime (12445439).

It is a junction number, because it is equal to n+sod(n) for n = 12445395 and 12445404.

It is a congruent number.

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, 30300 + ... + 30707.

It is an arithmetic number, because the mean of its divisors is an integer number (1281168).

Almost surely, 2^12445428 is an apocalyptic number.

It is an amenable number.

12445428 is an abundant number, since it is smaller than the sum of its proper divisors (18302604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12445428 is a wasteful number, since it uses less digits than its factorization.

12445428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61031 (or 61029 counting only the distinct ones).

The product of its digits is 10240, while the sum is 30.

The square root of 12445428 is about 3527.8078178948. The cubic root of 12445428 is about 231.7412146149.

Adding to 12445428 its reverse (82454421), we get a palindrome (94899849).

The spelling of 12445428 in words is "twelve million, four hundred forty-five thousand, four hundred twenty-eight".