12218470 has 32 divisors (see below), whose sum is σ = 24139296. Its totient is φ = 4416000.

The previous prime is 12218443. The next prime is 12218489. The reversal of 12218470 is 7481221.

It is a happy number.

12218470 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30270 + ... + 30670.

It is an arithmetic number, because the mean of its divisors is an integer number (754353).

Almost surely, 2^12218470 is an apocalyptic number.

12218470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12218470 is a deficient number, since it is larger than the sum of its proper divisors (11920826).

12218470 is a wasteful number, since it uses less digits than its factorization.

12218470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 12218470 is about 3495.4928121797. The cubic root of 12218470 is about 230.3238663663.

Adding to 12218470 its reverse (7481221), we get a palindrome (19699691).

The spelling of 12218470 in words is "twelve million, two hundred eighteen thousand, four hundred seventy".