20520032 has 48 divisors (see below), whose sum is σ = 44008272. Its totient is φ = 9361920.

The previous prime is 20520029. The next prime is 20520041. The reversal of 20520032 is 23002502.

It is a junction number, because it is equal to n+sod(n) for n = 20519989 and 20520016.

It is a congruent number.

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, 44282 + ... + 44742.

It is an arithmetic number, because the mean of its divisors is an integer number (916839).

Almost surely, 2^20520032 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 20520032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22004136).

20520032 is an abundant number, since it is smaller than the sum of its proper divisors (23488240).

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

20520032 is a wasteful number, since it uses less digits than its factorization.

20520032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591 (or 583 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 20520032 is about 4529.9041932474. The cubic root of 20520032 is about 273.7743004359.

Adding to 20520032 its reverse (23002502), we get a palindrome (43522534).

The spelling of 20520032 in words is "twenty million, five hundred twenty thousand, thirty-two".