16428437 has 2 divisors, whose sum is σ = 16428438. Its totient is φ = 16428436.

The previous prime is 16428403. The next prime is 16428449. The reversal of 16428437 is 73482461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10504081 + 5924356 = 3241^2 + 2434^2 .

It is a cyclic number.

It is not a de Polignac number, because 16428437 - 2¹⁰ = 16427413 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 16428397 and 16428406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16428487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8214218 + 8214219.

It is an arithmetic number, because the mean of its divisors is an integer number (8214219).

Almost surely, 2^16428437 is an apocalyptic number.

It is an amenable number.

16428437 is a deficient number, since it is larger than the sum of its proper divisors (1).

16428437 is an equidigital number, since it uses as much as digits as its factorization.

16428437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 35.

The square root of 16428437 is about 4053.2008339089. The cubic root of 16428437 is about 254.2135812828.

The spelling of 16428437 in words is "sixteen million, four hundred twenty-eight thousand, four hundred thirty-seven".