16159860 has 72 divisors (see below), whose sum is σ = 51911496. Its totient is φ = 4055040.

The previous prime is 16159837. The next prime is 16159867. The reversal of 16159860 is 6895161.

16159860 is a `hidden beast` number, since 1 + 6 + 1 + 598 + 60 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1089936 + 15069924 = 1044^2 + 3882^2 .

It is a super-2 number, since 2×16159860² = 522282150439200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16159867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 420 + ... + 5700.

It is an arithmetic number, because the mean of its divisors is an integer number (720993).

Almost surely, 2^16159860 is an apocalyptic number.

16159860 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 16159860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25955748).

16159860 is an abundant number, since it is smaller than the sum of its proper divisors (35751636).

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

16159860 is a wasteful number, since it uses less digits than its factorization.

16159860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5313 (or 5308 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 16159860 is about 4019.9328352598. The cubic root of 16159860 is about 252.8206428758.

The spelling of 16159860 in words is "sixteen million, one hundred fifty-nine thousand, eight hundred sixty".