16827640 has 16 divisors (see below), whose sum is σ = 37862280. Its totient is φ = 6731040.

The previous prime is 16827623. The next prime is 16827641. The reversal of 16827640 is 4672861.

It is a junction number, because it is equal to n+sod(n) for n = 16827596 and 16827605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16827641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210306 + ... + 210385.

Almost surely, 2^16827640 is an apocalyptic number.

16827640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16827640 is an abundant number, since it is smaller than the sum of its proper divisors (21034640).

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

16827640 is a wasteful number, since it uses less digits than its factorization.

16827640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420702 (or 420698 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 16827640 is about 4102.1506554489. The cubic root of 16827640 is about 256.2562132144.

The spelling of 16827640 in words is "sixteen million, eight hundred twenty-seven thousand, six hundred forty".