16827840 has 84 divisors (see below), whose sum is σ = 57890664. Its totient is φ = 4486656.

The previous prime is 16827829. The next prime is 16827857. The reversal of 16827840 is 4872861.

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

It is a junction number, because it is equal to n+sod(n) for n = 16827795 and 16827804.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42 + ... + 5801.

Almost surely, 2^16827840 is an apocalyptic number.

16827840 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 16827840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28945332).

16827840 is an abundant number, since it is smaller than the sum of its proper divisors (41062824).

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

16827840 is a wasteful number, since it uses less digits than its factorization.

16827840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5866 (or 5853 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 16827840 is about 4102.1750328332. The cubic root of 16827840 is about 256.2572284298.

The spelling of 16827840 in words is "sixteen million, eight hundred twenty-seven thousand, eight hundred forty".