20335120 has 40 divisors (see below), whose sum is σ = 50918616. Its totient is φ = 7507968.

The previous prime is 20335109. The next prime is 20335121. The reversal of 20335120 is 2153302.

It can be written as a sum of positive squares in 4 ways, for example, as 1982464 + 18352656 = 1408^2 + 4284^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 20335094 and 20335103.

It is not an unprimeable number, because it can be changed into a prime (20335121) 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, 8737 + ... + 10816.

Almost surely, 2^20335120 is an apocalyptic number.

20335120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20335120 is an abundant number, since it is smaller than the sum of its proper divisors (30583496).

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

20335120 is a wasteful number, since it uses less digits than its factorization.

20335120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19579 (or 19573 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 20335120 is about 4509.4478597717. The cubic root of 20335120 is about 272.9494644525.

Adding to 20335120 its reverse (2153302), we get a palindrome (22488422).

The spelling of 20335120 in words is "twenty million, three hundred thirty-five thousand, one hundred twenty".