20480530 has 40 divisors (see below), whose sum is σ = 43056972. Its totient is φ = 7013664.

The previous prime is 20480527. The next prime is 20480531. The reversal of 20480530 is 3508402.

It can be written as a sum of positive squares in 2 ways, for example, as 18173169 + 2307361 = 4263^2 + 1519^2 .

It is not an unprimeable number, because it can be changed into a prime (20480531) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 23584 + ... + 24436.

Almost surely, 2^20480530 is an apocalyptic number.

20480530 is an abundant number, since it is smaller than the sum of its proper divisors (22576442).

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

20480530 is an frugal number, since it uses more digits than its factorization.

20480530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888 (or 867 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 20480530 is about 4525.5419564954. The cubic root of 20480530 is about 273.5985115710.

Adding to 20480530 its reverse (3508402), we get a palindrome (23988932).

The spelling of 20480530 in words is "twenty million, four hundred eighty thousand, five hundred thirty".