12720230 has 32 divisors (see below), whose sum is σ = 24295680. Its totient is φ = 4786560.

The previous prime is 12720229. The next prime is 12720247. The reversal of 12720230 is 3202721.

It is a junction number, because it is equal to n+sod(n) for n = 12720199 and 12720208.

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, 10916 + ... + 12024.

It is an arithmetic number, because the mean of its divisors is an integer number (759240).

Almost surely, 2^12720230 is an apocalyptic number.

12720230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12720230 is a deficient number, since it is larger than the sum of its proper divisors (11575450).

12720230 is a wasteful number, since it uses less digits than its factorization.

12720230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 12720230 is about 3566.5431442785. The cubic root of 12720230 is about 233.4344708952.

Adding to 12720230 its reverse (3202721), we get a palindrome (15922951).

The spelling of 12720230 in words is "twelve million, seven hundred twenty thousand, two hundred thirty".