16856734 has 8 divisors (see below), whose sum is σ = 25453008. Its totient is φ = 8372400.

The previous prime is 16856717. The next prime is 16856737. The reversal of 16856734 is 43765861.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×16856734² = 568298962293512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16856737) by changing a digit.

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, 27607 + ... + 28210.

It is an arithmetic number, because the mean of its divisors is an integer number (3181626).

Almost surely, 2^16856734 is an apocalyptic number.

16856734 is a deficient number, since it is larger than the sum of its proper divisors (8596274).

16856734 is a wasteful number, since it uses less digits than its factorization.

16856734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55970.

The product of its digits is 120960, while the sum is 40.

The square root of 16856734 is about 4105.6953126115. The cubic root of 16856734 is about 256.4038121582.

The spelling of 16856734 in words is "sixteen million, eight hundred fifty-six thousand, seven hundred thirty-four".