12401428 has 24 divisors (see below), whose sum is σ = 23708160. Its totient is φ = 5641440.

The previous prime is 12401399. The next prime is 12401429. The reversal of 12401428 is 82410421.

It is a junction number, because it is equal to n+sod(n) for n = 12401399 and 12401408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12401429) 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 in 7 ways as a sum of consecutive naturals, for example, 2013 + ... + 5371.

It is an arithmetic number, because the mean of its divisors is an integer number (987840).

Almost surely, 2^12401428 is an apocalyptic number.

It is an amenable number.

12401428 is a deficient number, since it is larger than the sum of its proper divisors (11306732).

12401428 is a wasteful number, since it uses less digits than its factorization.

12401428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3447 (or 3445 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 12401428 is about 3521.5661288694. The cubic root of 12401428 is about 231.4677901469.

Adding to 12401428 its reverse (82410421), we get a palindrome (94811849).

The spelling of 12401428 in words is "twelve million, four hundred one thousand, four hundred twenty-eight".