13433428 has 6 divisors (see below), whose sum is σ = 23508506. Its totient is φ = 6716712.

The previous prime is 13433419. The next prime is 13433429. The reversal of 13433428 is 82433431.

It can be written as a sum of positive squares in only one way, i.e., 13046544 + 386884 = 3612^2 + 622^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13433396 and 13433405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13433429) 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, 1679175 + ... + 1679182.

Almost surely, 2^13433428 is an apocalyptic number.

It is an amenable number.

13433428 is a deficient number, since it is larger than the sum of its proper divisors (10075078).

13433428 is a wasteful number, since it uses less digits than its factorization.

13433428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3358361 (or 3358359 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

The square root of 13433428 is about 3665.1641163801. The cubic root of 13433428 is about 237.7181183645.

Adding to 13433428 its reverse (82433431), we get a palindrome (95866859).

It can be divided in two parts, 13433 and 428, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 13433428 in words is "thirteen million, four hundred thirty-three thousand, four hundred twenty-eight".