16381827 has 54 divisors (see below), whose sum is σ = 30354324. Its totient is φ = 8482320.

The previous prime is 16381801. The next prime is 16381847. The reversal of 16381827 is 72818361.

16381827 is a `hidden beast` number, since 1 + 638 + 18 + 2 + 7 = 666.

It is not a de Polignac number, because 16381827 - 2⁷ = 16381699 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16381791 and 16381800.

It is not an unprimeable number, because it can be changed into a prime (16381847) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 53208 + ... + 53514.

Almost surely, 2^16381827 is an apocalyptic number.

16381827 is a deficient number, since it is larger than the sum of its proper divisors (13972497).

16381827 is a wasteful number, since it uses less digits than its factorization.

16381827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349 (or 328 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 16381827 is about 4047.4469730930. The cubic root of 16381827 is about 253.9729392296.

The spelling of 16381827 in words is "sixteen million, three hundred eighty-one thousand, eight hundred twenty-seven".