13443428 has 6 divisors (see below), whose sum is σ = 23526006. Its totient is φ = 6721712.

The previous prime is 13443407. The next prime is 13443467. The reversal of 13443428 is 82434431.

It can be written as a sum of positive squares in only one way, i.e., 13191424 + 252004 = 3632^2 + 502^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13443428.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1680425 + ... + 1680432.

It is an arithmetic number, because the mean of its divisors is an integer number (3921001).

Almost surely, 2^13443428 is an apocalyptic number.

It is an amenable number.

13443428 is a deficient number, since it is larger than the sum of its proper divisors (10082578).

13443428 is a wasteful number, since it uses less digits than its factorization.

13443428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3360861 (or 3360859 counting only the distinct ones).

The product of its digits is 9216, while the sum is 29.

The square root of 13443428 is about 3666.5280579862. The cubic root of 13443428 is about 237.7770904442. Note that the first 3 decimals are identical.

Adding to 13443428 its reverse (82434431), we get a palindrome (95877859).

The spelling of 13443428 in words is "thirteen million, four hundred forty-three thousand, four hundred twenty-eight".