20530352 has 40 divisors (see below), whose sum is σ = 42425856. Its totient is φ = 9601856.

The previous prime is 20530351. The next prime is 20530397. The reversal of 20530352 is 25303502.

It is not an unprimeable number, because it can be changed into a prime (20530351) 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, 16703 + ... + 17889.

Almost surely, 2^20530352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20530352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21212928).

20530352 is an abundant number, since it is smaller than the sum of its proper divisors (21895504).

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

20530352 is a wasteful number, since it uses less digits than its factorization.

20530352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265 (or 1259 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 20530352 is about 4531.0431470027. The cubic root of 20530352 is about 273.8201885591.

Adding to 20530352 its reverse (25303502), we get a palindrome (45833854).

The spelling of 20530352 in words is "twenty million, five hundred thirty thousand, three hundred fifty-two".