13252520 has 32 divisors (see below), whose sum is σ = 31573800. Its totient is φ = 4988928.

The previous prime is 13252489. The next prime is 13252529. The reversal of 13252520 is 2525231.

13252520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 8491396 + 4761124 = 2914^2 + 2182^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 13252492 and 13252501.

It is not an unprimeable number, because it can be changed into a prime (13252529) 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, 9065 + ... + 10424.

Almost surely, 2^13252520 is an apocalyptic number.

13252520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13252520 is an abundant number, since it is smaller than the sum of its proper divisors (18321280).

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

13252520 is a wasteful number, since it uses less digits than its factorization.

13252520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19517 (or 19513 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 13252520 is about 3640.4010768046. The cubic root of 13252520 is about 236.6461751307.

Adding to 13252520 its reverse (2525231), we get a palindrome (15777751).

The spelling of 13252520 in words is "thirteen million, two hundred fifty-two thousand, five hundred twenty".