13452520 has 32 divisors (see below), whose sum is σ = 31314600. Its totient is φ = 5195008.

The previous prime is 13452503. The next prime is 13452533. The reversal of 13452520 is 2525431.

It can be written as a sum of positive squares in 4 ways, for example, as 12716356 + 736164 = 3566^2 + 858^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13452491 and 13452500.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4639 + ... + 6958.

Almost surely, 2^13452520 is an apocalyptic number.

13452520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13452520 is the 2320-th heptagonal number.

It is an amenable number.

13452520 is an abundant number, since it is smaller than the sum of its proper divisors (17862080).

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

13452520 is a wasteful number, since it uses less digits than its factorization.

13452520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11637 (or 11633 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 13452520 is about 3667.7677134737. The cubic root of 13452520 is about 237.8306824824.

Adding to 13452520 its reverse (2525431), we get a palindrome (15977951).

The spelling of 13452520 in words is "thirteen million, four hundred fifty-two thousand, five hundred twenty".