19920850 has 12 divisors (see below), whose sum is σ = 37052874. Its totient is φ = 7968320.

The previous prime is 19920847. The next prime is 19920851. The reversal of 19920850 is 5802991.

It can be written as a sum of positive squares in 3 ways, for example, as 19368801 + 552049 = 4401^2 + 743^2 .

It is not an unprimeable number, because it can be changed into a prime (19920851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 199159 + ... + 199258.

Almost surely, 2^19920850 is an apocalyptic number.

19920850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19920850 is a deficient number, since it is larger than the sum of its proper divisors (17132024).

19920850 is a wasteful number, since it uses less digits than its factorization.

19920850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398429 (or 398424 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 19920850 is about 4463.2779433954. The cubic root of 19920850 is about 271.0832113311.

The spelling of 19920850 in words is "nineteen million, nine hundred twenty thousand, eight hundred fifty".