20260520 has 48 divisors (see below), whose sum is σ = 53033940. Its totient is φ = 6945792.

The previous prime is 20260511. The next prime is 20260523. The reversal of 20260520 is 2506202.

It can be written as a sum of positive squares in 2 ways, for example, as 17757796 + 2502724 = 4214^2 + 1582^2 .

It is not an unprimeable number, because it can be changed into a prime (20260523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3209 + ... + 7128.

Almost surely, 2^20260520 is an apocalyptic number.

20260520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20260520 is an abundant number, since it is smaller than the sum of its proper divisors (32773420).

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

20260520 is a wasteful number, since it uses less digits than its factorization.

20260520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10362 (or 10351 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 20260520 is about 4501.1687371171. The cubic root of 20260520 is about 272.6152810218.

Adding to 20260520 its reverse (2506202), we get a palindrome (22766722).

The spelling of 20260520 in words is "twenty million, two hundred sixty thousand, five hundred twenty".