16428337 has 4 divisors (see below), whose sum is σ = 16697716. Its totient is φ = 16158960.

The previous prime is 16428319. The next prime is 16428343. The reversal of 16428337 is 73382461.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4704561 + 11723776 = 2169^2 + 3424^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16428337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16428437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134598 + ... + 134719.

It is an arithmetic number, because the mean of its divisors is an integer number (4174429).

Almost surely, 2^16428337 is an apocalyptic number.

It is an amenable number.

16428337 is a deficient number, since it is larger than the sum of its proper divisors (269379).

16428337 is an equidigital number, since it uses as much as digits as its factorization.

16428337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269378.

The product of its digits is 24192, while the sum is 34.

The square root of 16428337 is about 4053.1884979606. The cubic root of 16428337 is about 254.2130654819.

The spelling of 16428337 in words is "sixteen million, four hundred twenty-eight thousand, three hundred thirty-seven".