16189540 has 48 divisors (see below), whose sum is σ = 35642880. Its totient is φ = 6168960.

The previous prime is 16189531. The next prime is 16189553. The reversal of 16189540 is 4598161.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 16189496 and 16189505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59605 + ... + 59875.

It is an arithmetic number, because the mean of its divisors is an integer number (742560).

Almost surely, 2^16189540 is an apocalyptic number.

16189540 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 16189540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17821440).

16189540 is an abundant number, since it is smaller than the sum of its proper divisors (19453340).

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

16189540 is a wasteful number, since it uses less digits than its factorization.

16189540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412 (or 410 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 16189540 is about 4023.6227457355. The cubic root of 16189540 is about 252.9753291883.

The spelling of 16189540 in words is "sixteen million, one hundred eighty-nine thousand, five hundred forty".