16381056 has 64 divisors (see below), whose sum is σ = 45043200. Its totient is φ = 5268480.

The previous prime is 16381033. The next prime is 16381061. The reversal of 16381056 is 65018361.

16381056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10401 + ... + 11871.

It is an arithmetic number, because the mean of its divisors is an integer number (703800).

Almost surely, 2^16381056 is an apocalyptic number.

16381056 is a gapful number since it is divisible by the number (16) 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 16381056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22521600).

16381056 is an abundant number, since it is smaller than the sum of its proper divisors (28662144).

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

16381056 is a wasteful number, since it uses less digits than its factorization.

16381056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1517 (or 1505 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 16381056 is about 4047.3517267468. The cubic root of 16381056 is about 253.9689548102.

The spelling of 16381056 in words is "sixteen million, three hundred eighty-one thousand, fifty-six".