16860000 has 120 divisors (see below), whose sum is σ = 55500984. Its totient is φ = 4480000.

The previous prime is 16859993. The next prime is 16860013. The reversal of 16860000 is 6861.

It is a tau number, because it is divible by the number of its divisors (120).

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 59860 + ... + 60140.

Almost surely, 2^16860000 is an apocalyptic number.

16860000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16860000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27750492).

16860000 is an abundant number, since it is smaller than the sum of its proper divisors (38640984).

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

16860000 is an equidigital number, since it uses as much as digits as its factorization.

16860000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 16860000 is about 4106.0930335296. The cubic root of 16860000 is about 256.4203705412.

Adding to 16860000 its reverse (6861), we get a palindrome (16866861).

It can be divided in two parts, 16 and 860000, that added together give a triangular number (860016 = T₁₃₁₁).

The spelling of 16860000 in words is "sixteen million, eight hundred sixty thousand".