16840312 has 16 divisors (see below), whose sum is σ = 31818600. Its totient is φ = 8355360.

The previous prime is 16840309. The next prime is 16840321. The reversal of 16840312 is 21304861.

It is a super-2 number, since 2×16840312² = 567192216514688, which contains 22 as substring.

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, 6987 + ... + 9082.

Almost surely, 2^16840312 is an apocalyptic number.

It is an amenable number.

16840312 is a deficient number, since it is larger than the sum of its proper divisors (14978288).

16840312 is a wasteful number, since it uses less digits than its factorization.

16840312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16206 (or 16202 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 16840312 is about 4103.6949204345. The cubic root of 16840312 is about 256.3205213796.

The spelling of 16840312 in words is "sixteen million, eight hundred forty thousand, three hundred twelve".