12428445 has 48 divisors (see below), whose sum is σ = 21927168. Its totient is φ = 6005760.

The previous prime is 12428431. The next prime is 12428467. The reversal of 12428445 is 54482421.

It is not a de Polignac number, because 12428445 - 2¹⁰ = 12427421 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 203715 + ... + 203775.

It is an arithmetic number, because the mean of its divisors is an integer number (456816).

Almost surely, 2^12428445 is an apocalyptic number.

12428445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12428445 is a deficient number, since it is larger than the sum of its proper divisors (9498723).

12428445 is a wasteful number, since it uses less digits than its factorization.

12428445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 133 counting only the distinct ones).

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

The square root of 12428445 is about 3525.3999773075. The cubic root of 12428445 is about 231.6357554695.

The spelling of 12428445 in words is "twelve million, four hundred twenty-eight thousand, four hundred forty-five".