16324729 has 2 divisors, whose sum is σ = 16324730. Its totient is φ = 16324728.

The previous prime is 16324691. The next prime is 16324739. The reversal of 16324729 is 92742361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14288400 + 2036329 = 3780^2 + 1427^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16324729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16324694 and 16324703.

It is not a weakly prime, because it can be changed into another prime (16324739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8162364 + 8162365.

It is an arithmetic number, because the mean of its divisors is an integer number (8162365).

Almost surely, 2^16324729 is an apocalyptic number.

It is an amenable number.

16324729 is a deficient number, since it is larger than the sum of its proper divisors (1).

16324729 is an equidigital number, since it uses as much as digits as its factorization.

16324729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 34.

The square root of 16324729 is about 4040.3872339171. The cubic root of 16324729 is about 253.6775259549.

The spelling of 16324729 in words is "sixteen million, three hundred twenty-four thousand, seven hundred twenty-nine".