20480512 has 80 divisors (see below), whose sum is σ = 46918872. Its totient is φ = 8847360.

The previous prime is 20480503. The next prime is 20480519. The reversal of 20480512 is 21508402.

It can be written as a sum of positive squares in 4 ways, for example, as 10342656 + 10137856 = 3216^2 + 3184^2 .

It is not an unprimeable number, because it can be changed into a prime (20480519) 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, 113062 + ... + 113242.

Almost surely, 2^20480512 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 20480512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23459436).

20480512 is an abundant number, since it is smaller than the sum of its proper divisors (26438360).

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

20480512 is a wasteful number, since it uses less digits than its factorization.

20480512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 20480512 is about 4525.5399677829. The cubic root of 20480512 is about 273.5984314172.

Adding to 20480512 its reverse (21508402), we get a palindrome (41988914).

The spelling of 20480512 in words is "twenty million, four hundred eighty thousand, five hundred twelve".