20195320 has 48 divisors (see below), whose sum is σ = 48297240. Its totient is φ = 7598592.

The previous prime is 20195297. The next prime is 20195363. The reversal of 20195320 is 2359102.

It is a junction number, because it is equal to n+sod(n) for n = 20195291 and 20195300.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10687 + ... + 12433.

Almost surely, 2^20195320 is an apocalyptic number.

20195320 is a gapful number since it is divisible by the number (20) 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 20195320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24148620).

20195320 is an abundant number, since it is smaller than the sum of its proper divisors (28101920).

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

20195320 is a wasteful number, since it uses less digits than its factorization.

20195320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1792 (or 1771 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 20195320 is about 4493.9203375227. The cubic root of 20195320 is about 272.3225340588.

The spelling of 20195320 in words is "twenty million, one hundred ninety-five thousand, three hundred twenty".