12315458 has 16 divisors (see below), whose sum is σ = 19900320. Its totient is φ = 5697216.

The previous prime is 12315449. The next prime is 12315461. The reversal of 12315458 is 85451321.

It is a self number, because there is not a number n which added to its sum of digits gives 12315458.

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, 2135 + ... + 5402.

It is an arithmetic number, because the mean of its divisors is an integer number (1243770).

Almost surely, 2^12315458 is an apocalyptic number.

12315458 is a deficient number, since it is larger than the sum of its proper divisors (7584862).

12315458 is a wasteful number, since it uses less digits than its factorization.

12315458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7601.

The product of its digits is 4800, while the sum is 29.

The square root of 12315458 is about 3509.3386841398. The cubic root of 12315458 is about 230.9316839766.

Adding to 12315458 its reverse (85451321), we get a palindrome (97766779).

The spelling of 12315458 in words is "twelve million, three hundred fifteen thousand, four hundred fifty-eight".