16409668 has 24 divisors (see below), whose sum is σ = 31550400. Its totient is φ = 7405920.

The previous prime is 16409639. The next prime is 16409677. The reversal of 16409668 is 86690461.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 16409668.

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 7 ways as a sum of consecutive naturals, for example, 5305 + ... + 7807.

It is an arithmetic number, because the mean of its divisors is an integer number (1314600).

Almost surely, 2^16409668 is an apocalyptic number.

It is an amenable number.

16409668 is a deficient number, since it is larger than the sum of its proper divisors (15140732).

16409668 is a wasteful number, since it uses less digits than its factorization.

16409668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2667 (or 2665 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 16409668 is about 4050.8848416118. The cubic root of 16409668 is about 254.1167339098.

The spelling of 16409668 in words is "sixteen million, four hundred nine thousand, six hundred sixty-eight".