12509496 has 24 divisors (see below), whose sum is σ = 33880080. Its totient is φ = 4169808.

The previous prime is 12509479. The next prime is 12509507. The reversal of 12509496 is 69490521.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 12509496.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 86800 + ... + 86943.

It is an arithmetic number, because the mean of its divisors is an integer number (1411670).

Almost surely, 2^12509496 is an apocalyptic number.

It is an amenable number.

12509496 is an abundant number, since it is smaller than the sum of its proper divisors (21370584).

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

12509496 is a wasteful number, since it uses less digits than its factorization.

12509496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173755 (or 173748 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 12509496 is about 3536.8765881778. The cubic root of 12509496 is about 232.1381955085.

The spelling of 12509496 in words is "twelve million, five hundred nine thousand, four hundred ninety-six".