16385660 has 48 divisors (see below), whose sum is σ = 36288000. Its totient is φ = 6202944.

The previous prime is 16385651. The next prime is 16385711. The reversal of 16385660 is 6658361.

It is a self number, because there is not a number n which added to its sum of digits gives 16385660.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 82241 + ... + 82439.

It is an arithmetic number, because the mean of its divisors is an integer number (756000).

Almost surely, 2^16385660 is an apocalyptic number.

16385660 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 16385660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18144000).

16385660 is an abundant number, since it is smaller than the sum of its proper divisors (19902340).

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

16385660 is a wasteful number, since it uses less digits than its factorization.

16385660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 16385660 is about 4047.9204537639. The cubic root of 16385660 is about 253.9927457783.

The spelling of 16385660 in words is "sixteen million, three hundred eighty-five thousand, six hundred sixty".