12170730 has 64 divisors (see below), whose sum is σ = 34328448. Its totient is φ = 2722560.

The previous prime is 12170713. The next prime is 12170771. The reversal of 12170730 is 3707121.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12170697 and 12170706.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2872 + ... + 5708.

It is an arithmetic number, because the mean of its divisors is an integer number (536382).

Almost surely, 2^12170730 is an apocalyptic number.

12170730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12170730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17164224).

12170730 is an abundant number, since it is smaller than the sum of its proper divisors (22157718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12170730 is a wasteful number, since it uses less digits than its factorization.

12170730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2871.

The product of its (nonzero) digits is 294, while the sum is 21.

The square root of 12170730 is about 3488.6573348496. The cubic root of 12170730 is about 230.0235010643.

Adding to 12170730 its reverse (3707121), we get a palindrome (15877851).

The spelling of 12170730 in words is "twelve million, one hundred seventy thousand, seven hundred thirty".