16420733 has 6 divisors (see below), whose sum is σ = 19101726. Its totient is φ = 14074872.

The previous prime is 16420721. The next prime is 16420739. The reversal of 16420733 is 33702461.

It can be written as a sum of positive squares in only one way, i.e., 14341369 + 2079364 = 3787^2 + 1442^2 .

It is not a de Polignac number, because 16420733 - 2¹⁰ = 16419709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16420739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 167510 + ... + 167607.

It is an arithmetic number, because the mean of its divisors is an integer number (3183621).

Almost surely, 2^16420733 is an apocalyptic number.

It is an amenable number.

16420733 is a deficient number, since it is larger than the sum of its proper divisors (2680993).

16420733 is an equidigital number, since it uses as much as digits as its factorization.

16420733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335131 (or 335124 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 16420733 is about 4052.2503624529. The cubic root of 16420733 is about 254.1738378460.

The spelling of 16420733 in words is "sixteen million, four hundred twenty thousand, seven hundred thirty-three".