16886540 has 24 divisors (see below), whose sum is σ = 38686032. Its totient is φ = 6140480.

The previous prime is 16886533. The next prime is 16886549. The reversal of 16886540 is 4568861.

It is a junction number, because it is equal to n+sod(n) for n = 16886494 and 16886503.

It is not an unprimeable number, because it can be changed into a prime (16886549) 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, 38159 + ... + 38598.

It is an arithmetic number, because the mean of its divisors is an integer number (1611918).

Almost surely, 2^16886540 is an apocalyptic number.

16886540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16886540 is an abundant number, since it is smaller than the sum of its proper divisors (21799492).

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

16886540 is a wasteful number, since it uses less digits than its factorization.

16886540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76777 (or 76775 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 16886540 is about 4109.3235453052. The cubic root of 16886540 is about 256.5548471895.

It can be divided in two parts, 1688 and 6540, that added together give a palindrome (8228).

The spelling of 16886540 in words is "sixteen million, eight hundred eighty-six thousand, five hundred forty".