12513240 has 48 divisors (see below), whose sum is σ = 40669200. Its totient is φ = 3336768.

The previous prime is 12513227. The next prime is 12513269. The reversal of 12513240 is 4231521.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17020 + ... + 17739.

It is an arithmetic number, because the mean of its divisors is an integer number (847275).

Almost surely, 2^12513240 is an apocalyptic number.

12513240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12513240 is an abundant number, since it is smaller than the sum of its proper divisors (28155960).

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

12513240 is a wasteful number, since it uses less digits than its factorization.

12513240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34776 (or 34769 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 12513240 is about 3537.4058291352. The cubic root of 12513240 is about 232.1613522824.

Adding to 12513240 its reverse (4231521), we get a palindrome (16744761).

The spelling of 12513240 in words is "twelve million, five hundred thirteen thousand, two hundred forty".