12508436 has 6 divisors (see below), whose sum is σ = 21889770. Its totient is φ = 6254216.

The previous prime is 12508421. The next prime is 12508453. The reversal of 12508436 is 63480521.

It can be written as a sum of positive squares in only one way, i.e., 9424900 + 3083536 = 3070^2 + 1756^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12508399 and 12508408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1563551 + ... + 1563558.

It is an arithmetic number, because the mean of its divisors is an integer number (3648295).

Almost surely, 2^12508436 is an apocalyptic number.

It is an amenable number.

12508436 is a deficient number, since it is larger than the sum of its proper divisors (9381334).

12508436 is a wasteful number, since it uses less digits than its factorization.

12508436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3127113 (or 3127111 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 12508436 is about 3536.7267352737. The cubic root of 12508436 is about 232.1316385314.

Adding to 12508436 its reverse (63480521), we get a palindrome (75988957).

The spelling of 12508436 in words is "twelve million, five hundred eight thousand, four hundred thirty-six".