20203960 has 64 divisors (see below), whose sum is σ = 52876800. Its totient is φ = 6804096.

The previous prime is 20203957. The next prime is 20203969. The reversal of 20203960 is 6930202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15909 + ... + 17131.

It is an arithmetic number, because the mean of its divisors is an integer number (826200).

Almost surely, 2^20203960 is an apocalyptic number.

20203960 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 20203960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26438400).

20203960 is an abundant number, since it is smaller than the sum of its proper divisors (32672840).

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

20203960 is a wasteful number, since it uses less digits than its factorization.

20203960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300 (or 1296 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 20203960 is about 4494.8815334778. The cubic root of 20203960 is about 272.3613637025.

The spelling of 20203960 in words is "twenty million, two hundred three thousand, nine hundred sixty".