12428404 has 6 divisors (see below), whose sum is σ = 21749714. Its totient is φ = 6214200.

The previous prime is 12428401. The next prime is 12428431. The reversal of 12428404 is 40482421.

It can be written as a sum of positive squares in only one way, i.e., 11424400 + 1004004 = 3380^2 + 1002^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12428401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1553547 + ... + 1553554.

Almost surely, 2^12428404 is an apocalyptic number.

It is an amenable number.

12428404 is a deficient number, since it is larger than the sum of its proper divisors (9321310).

12428404 is a wasteful number, since it uses less digits than its factorization.

12428404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3107105 (or 3107103 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

The square root of 12428404 is about 3525.3941623597. The cubic root of 12428404 is about 231.6355007560.

The spelling of 12428404 in words is "twelve million, four hundred twenty-eight thousand, four hundred four".