12115418 has 16 divisors (see below), whose sum is σ = 21276864. Its totient is φ = 5065440.

The previous prime is 12115399. The next prime is 12115421. The reversal of 12115418 is 81451121.

It is a junction number, because it is equal to n+sod(n) for n = 12115393 and 12115402.

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, 9980 + ... + 11127.

It is an arithmetic number, because the mean of its divisors is an integer number (1329804).

Almost surely, 2^12115418 is an apocalyptic number.

12115418 is a deficient number, since it is larger than the sum of its proper divisors (9161446).

12115418 is a wasteful number, since it uses less digits than its factorization.

12115418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21157.

The product of its digits is 320, while the sum is 23.

The square root of 12115418 is about 3480.7209023419. The cubic root of 12115418 is about 229.6745112405.

Adding to 12115418 its reverse (81451121), we get a palindrome (93566539).

The spelling of 12115418 in words is "twelve million, one hundred fifteen thousand, four hundred eighteen".