16212128 has 12 divisors (see below), whose sum is σ = 31917690. Its totient is φ = 8106048.

The previous prime is 16212127. The next prime is 16212137. The reversal of 16212128 is 82121261.

It can be written as a sum of positive squares in only one way, i.e., 10316944 + 5895184 = 3212^2 + 2428^2 .

It is not an unprimeable number, because it can be changed into a prime (16212121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253283 + ... + 253346.

Almost surely, 2^16212128 is an apocalyptic number.

It is an amenable number.

16212128 is a deficient number, since it is larger than the sum of its proper divisors (15705562).

16212128 is an equidigital number, since it uses as much as digits as its factorization.

16212128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506639 (or 506631 counting only the distinct ones).

The product of its digits is 384, while the sum is 23.

The square root of 16212128 is about 4026.4286905395. The cubic root of 16212128 is about 253.0929267496.

Adding to 16212128 its reverse (82121261), we get a palindrome (98333389).

The spelling of 16212128 in words is "sixteen million, two hundred twelve thousand, one hundred twenty-eight".