12513270 has 64 divisors (see below), whose sum is σ = 37449216. Its totient is φ = 2599680.

The previous prime is 12513269. The next prime is 12513271. The reversal of 12513270 is 7231521.

It is an interprime number because it is at equal distance from previous prime (12513269) and next prime (12513271).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12513271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 399 + ... + 5018.

It is an arithmetic number, because the mean of its divisors is an integer number (585144).

Almost surely, 2^12513270 is an apocalyptic number.

12513270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12513270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18724608).

12513270 is an abundant number, since it is smaller than the sum of its proper divisors (24935946).

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

12513270 is a wasteful number, since it uses less digits than its factorization.

12513270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5445.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 12513270 is about 3537.4100695283. The cubic root of 12513270 is about 232.1615378148.

Adding to 12513270 its reverse (7231521), we get a palindrome (19744791).

The spelling of 12513270 in words is "twelve million, five hundred thirteen thousand, two hundred seventy".