16853864 has 8 divisors (see below), whose sum is σ = 31601010. Its totient is φ = 8426928.

The previous prime is 16853861. The next prime is 16853923. The reversal of 16853864 is 46835861.

It can be written as a sum of positive squares in only one way, i.e., 15665764 + 1188100 = 3958^2 + 1090^2 .

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

It is not an unprimeable number, because it can be changed into a prime (16853861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1053359 + ... + 1053374.

Almost surely, 2^16853864 is an apocalyptic number.

It is an amenable number.

16853864 is a deficient number, since it is larger than the sum of its proper divisors (14747146).

16853864 is a wasteful number, since it uses less digits than its factorization.

16853864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2106739 (or 2106735 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 16853864 is about 4105.3457832441. The cubic root of 16853864 is about 256.3892597009.

The spelling of 16853864 in words is "sixteen million, eight hundred fifty-three thousand, eight hundred sixty-four".