16397632 has 28 divisors (see below), whose sum is σ = 32749236. Its totient is φ = 8145920.

The previous prime is 16397629. The next prime is 16397651. The reversal of 16397632 is 23679361.

It can be written as a sum of positive squares in 2 ways, for example, as 11451456 + 4946176 = 3384^2 + 2224^2 .

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 16397591 and 16397600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10332 + ... + 11812.

Almost surely, 2^16397632 is an apocalyptic number.

It is an amenable number.

16397632 is a deficient number, since it is larger than the sum of its proper divisors (16351604).

16397632 is a wasteful number, since it uses less digits than its factorization.

16397632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666 (or 1656 counting only the distinct ones).

The product of its digits is 40824, while the sum is 37.

The square root of 16397632 is about 4049.3989677482. The cubic root of 16397632 is about 254.0545897093.

The spelling of 16397632 in words is "sixteen million, three hundred ninety-seven thousand, six hundred thirty-two".