16043428 has 6 divisors (see below), whose sum is σ = 28076006. Its totient is φ = 8021712.

The previous prime is 16043389. The next prime is 16043431. The reversal of 16043428 is 82434061.

It can be written as a sum of positive squares in only one way, i.e., 14500864 + 1542564 = 3808^2 + 1242^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16043396 and 16043405.

It is an unprimeable number.

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, 2005425 + ... + 2005432.

Almost surely, 2^16043428 is an apocalyptic number.

It is an amenable number.

16043428 is a deficient number, since it is larger than the sum of its proper divisors (12032578).

16043428 is a wasteful number, since it uses less digits than its factorization.

16043428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4010861 (or 4010859 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 16043428 is about 4005.4248214141. The cubic root of 16043428 is about 252.2119867361.

Adding to 16043428 its product of nonzero digits (4608), we get a square (16048036 = 4006²).

Adding to 16043428 its reverse (82434061), we get a palindrome (98477489).

It can be divided in two parts, 16043 and 428, that added together give a triangular number (16471 = T₁₈₁).

The spelling of 16043428 in words is "sixteen million, forty-three thousand, four hundred twenty-eight".