16820850 has 24 divisors (see below), whose sum is σ = 41716080. Its totient is φ = 4485520.

The previous prime is 16820849. The next prime is 16820857. The reversal of 16820850 is 5802861.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16820857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55920 + ... + 56219.

It is an arithmetic number, because the mean of its divisors is an integer number (1738170).

Almost surely, 2^16820850 is an apocalyptic number.

16820850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16820850 is an abundant number, since it is smaller than the sum of its proper divisors (24895230).

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

16820850 is a wasteful number, since it uses less digits than its factorization.

16820850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112154 (or 112149 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 16820850 is about 4101.3229572907. The cubic root of 16820850 is about 256.2217418770.

The spelling of 16820850 in words is "sixteen million, eight hundred twenty thousand, eight hundred fifty".