20103320 has 32 divisors (see below), whose sum is σ = 45748800. Its totient is φ = 7949568.

The previous prime is 20103319. The next prime is 20103329. The reversal of 20103320 is 2330102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 737 + ... + 6383.

It is an arithmetic number, because the mean of its divisors is an integer number (1429650).

Almost surely, 2^20103320 is an apocalyptic number.

20103320 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 20103320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22874400).

20103320 is an abundant number, since it is smaller than the sum of its proper divisors (25645480).

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

20103320 is a wasteful number, since it uses less digits than its factorization.

20103320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5747 (or 5743 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 20103320 is about 4483.6726017853. The cubic root of 20103320 is about 271.9083817733.

Adding to 20103320 its reverse (2330102), we get a palindrome (22433422).

The spelling of 20103320 in words is "twenty million, one hundred three thousand, three hundred twenty".