19930 has 8 divisors (see below), whose sum is σ = 35892. Its totient is φ = 7968.

The previous prime is 19927. The next prime is 19937. The reversal of 19930 is 3991.

It can be written as a sum of positive squares in 2 ways, for example, as 19881 + 49 = 141^2 + 7^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (19937) 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, 987 + ... + 1006.

2¹⁹⁹³⁰ is an apocalyptic number.

19930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19930 is a deficient number, since it is larger than the sum of its proper divisors (15962).

19930 is a wasteful number, since it uses less digits than its factorization.

19930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000.

The product of its (nonzero) digits is 243, while the sum is 22.

The square root of 19930 is about 141.1736519326. The cubic root of 19930 is about 27.1124709422.

It can be divided in two parts, 19 and 930, that added together give a palindrome (949).

The spelling of 19930 in words is "nineteen thousand, nine hundred thirty".