12503340 has 36 divisors (see below), whose sum is σ = 37927344. Its totient is φ = 3334176.

The previous prime is 12503327. The next prime is 12503341. The reversal of 12503340 is 4330521.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×12503340² = 312667022311200, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (12503341) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 34552 + ... + 34911.

Almost surely, 2^12503340 is an apocalyptic number.

12503340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12503340 is an abundant number, since it is smaller than the sum of its proper divisors (25424004).

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

12503340 is a wasteful number, since it uses less digits than its factorization.

12503340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69478 (or 69473 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 12503340 is about 3536.0062217140. The cubic root of 12503340 is about 232.1001103821.

Adding to 12503340 its reverse (4330521), we get a palindrome (16833861).

The spelling of 12503340 in words is "twelve million, five hundred three thousand, three hundred forty".