12603218 has 16 divisors (see below), whose sum is σ = 19970496. Its totient is φ = 5953200.

The previous prime is 12603193. The next prime is 12603221. The reversal of 12603218 is 81230621.

It is a super-2 number, since 2×12603218² = 317682207911048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 12603193 and 12603202.

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, 2168 + ... + 5468.

It is an arithmetic number, because the mean of its divisors is an integer number (1248156).

Almost surely, 2^12603218 is an apocalyptic number.

12603218 is a deficient number, since it is larger than the sum of its proper divisors (7367278).

12603218 is a wasteful number, since it uses less digits than its factorization.

12603218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3409.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 12603218 is about 3550.1011253202. The cubic root of 12603218 is about 232.7164854564.

Adding to 12603218 its reverse (81230621), we get a palindrome (93833839).

It can be divided in two parts, 12603 and 218, that added together give a palindrome (12821).

The spelling of 12603218 in words is "twelve million, six hundred three thousand, two hundred eighteen".