16840216 has 8 divisors (see below), whose sum is σ = 31575420. Its totient is φ = 8420104.

The previous prime is 16840171. The next prime is 16840231. The reversal of 16840216 is 61204861.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052506 + ... + 1052521.

Almost surely, 2^16840216 is an apocalyptic number.

It is an amenable number.

16840216 is a deficient number, since it is larger than the sum of its proper divisors (14735204).

16840216 is a wasteful number, since it uses less digits than its factorization.

16840216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105033 (or 2105029 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 16840216 is about 4103.6832236419. The cubic root of 16840216 is about 256.3200343178.

The spelling of 16840216 in words is "sixteen million, eight hundred forty thousand, two hundred sixteen".