16428133 has 2 divisors, whose sum is σ = 16428134. Its totient is φ = 16428132.

The previous prime is 16428119. The next prime is 16428149. The reversal of 16428133 is 33182461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13972644 + 2455489 = 3738^2 + 1567^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16428133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16428163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8214066 + 8214067.

It is an arithmetic number, because the mean of its divisors is an integer number (8214067).

Almost surely, 2^16428133 is an apocalyptic number.

It is an amenable number.

16428133 is a deficient number, since it is larger than the sum of its proper divisors (1).

16428133 is an equidigital number, since it uses as much as digits as its factorization.

16428133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 28.

The square root of 16428133 is about 4053.1633325096. The cubic root of 16428133 is about 254.2120132415.

It can be divided in two parts, 16428 and 133, that added together give a palindrome (16561).

The spelling of 16428133 in words is "sixteen million, four hundred twenty-eight thousand, one hundred thirty-three".