20130252 has 12 divisors (see below), whose sum is σ = 46970616. Its totient is φ = 6710080.

The previous prime is 20130251. The next prime is 20130281. The reversal of 20130252 is 25203102.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (20130251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 838749 + ... + 838772.

It is an arithmetic number, because the mean of its divisors is an integer number (3914218).

Almost surely, 2^20130252 is an apocalyptic number.

It is an amenable number.

20130252 is an abundant number, since it is smaller than the sum of its proper divisors (26840364).

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

20130252 is a wasteful number, since it uses less digits than its factorization.

20130252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677528 (or 1677526 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 20130252 is about 4486.6749380805. The cubic root of 20130252 is about 272.0297509269.

Adding to 20130252 its reverse (25203102), we get a palindrome (45333354).

The spelling of 20130252 in words is "twenty million, one hundred thirty thousand, two hundred fifty-two".