12515430 has 16 divisors (see below), whose sum is σ = 30037104. Its totient is φ = 3337440.

The previous prime is 12515423. The next prime is 12515449. The reversal of 12515430 is 3451521.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12515397 and 12515406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208561 + ... + 208620.

It is an arithmetic number, because the mean of its divisors is an integer number (1877319).

Almost surely, 2^12515430 is an apocalyptic number.

12515430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12515430 is an abundant number, since it is smaller than the sum of its proper divisors (17521674).

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

12515430 is a wasteful number, since it uses less digits than its factorization.

12515430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417191.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 12515430 is about 3537.7153644690. The cubic root of 12515430 is about 232.1748953697.

Adding to 12515430 its reverse (3451521), we get a palindrome (15966951).

The spelling of 12515430 in words is "twelve million, five hundred fifteen thousand, four hundred thirty".