16853840 has 40 divisors (see below), whose sum is σ = 39426048. Its totient is φ = 6700160.

The previous prime is 16853839. The next prime is 16853849. The reversal of 16853840 is 4835861.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 16853840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16853849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14729 + ... + 15831.

Almost surely, 2^16853840 is an apocalyptic number.

16853840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16853840 is an abundant number, since it is smaller than the sum of its proper divisors (22572208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16853840 is a wasteful number, since it uses less digits than its factorization.

16853840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307 (or 1301 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 16853840 is about 4105.3428602250. The cubic root of 16853840 is about 256.3891380009.

The spelling of 16853840 in words is "sixteen million, eight hundred fifty-three thousand, eight hundred forty".