20033130 has 64 divisors (see below), whose sum is σ = 53480448. Its totient is φ = 4769280.

The previous prime is 20033093. The next prime is 20033137. The reversal of 20033130 is 3133002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20033137) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 11262 + ... + 12918.

It is an arithmetic number, because the mean of its divisors is an integer number (835632).

Almost surely, 2^20033130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20033130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26740224).

20033130 is an abundant number, since it is smaller than the sum of its proper divisors (33447318).

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

20033130 is a wasteful number, since it uses less digits than its factorization.

20033130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711.

The product of its (nonzero) digits is 54, while the sum is 12.

The square root of 20033130 is about 4475.8384689352. The cubic root of 20033130 is about 271.5915600690.

Adding to 20033130 its reverse (3133002), we get a palindrome (23166132).

The spelling of 20033130 in words is "twenty million, thirty-three thousand, one hundred thirty".