20301320 has 32 divisors (see below), whose sum is σ = 49192920. Its totient is φ = 7495680.

The previous prime is 20301319. The next prime is 20301353. The reversal of 20301320 is 2310302.

It can be written as a sum of positive squares in 4 ways, for example, as 17322244 + 2979076 = 4162^2 + 1726^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19001 + ... + 20040.

Almost surely, 2^20301320 is an apocalyptic number.

20301320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20301320 is an abundant number, since it is smaller than the sum of its proper divisors (28891600).

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

20301320 is a wasteful number, since it uses less digits than its factorization.

20301320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39065 (or 39061 counting only the distinct ones).

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

The square root of 20301320 is about 4505.6986139776. The cubic root of 20301320 is about 272.7981530248.

Adding to 20301320 its reverse (2310302), we get a palindrome (22611622).

The spelling of 20301320 in words is "twenty million, three hundred one thousand, three hundred twenty".