16321724 has 6 divisors (see below), whose sum is σ = 28563024. Its totient is φ = 8160860.

The previous prime is 16321691. The next prime is 16321729. The reversal of 16321724 is 42712361.

It is a junction number, because it is equal to n+sod(n) for n = 16321693 and 16321702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16321729) 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, 2040212 + ... + 2040219.

It is an arithmetic number, because the mean of its divisors is an integer number (4760504).

Almost surely, 2^16321724 is an apocalyptic number.

It is an amenable number.

16321724 is a deficient number, since it is larger than the sum of its proper divisors (12241300).

16321724 is a wasteful number, since it uses less digits than its factorization.

16321724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4080435 (or 4080433 counting only the distinct ones).

The product of its digits is 2016, while the sum is 26.

The square root of 16321724 is about 4040.0153465055. The cubic root of 16321724 is about 253.6619596374.

The spelling of 16321724 in words is "sixteen million, three hundred twenty-one thousand, seven hundred twenty-four".