12215630 has 32 divisors (see below), whose sum is σ = 25375680. Its totient is φ = 4147200.

The previous prime is 12215611. The next prime is 12215633. The reversal of 12215630 is 3651221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12215633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6830 + ... + 8430.

It is an arithmetic number, because the mean of its divisors is an integer number (792990).

Almost surely, 2^12215630 is an apocalyptic number.

12215630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12215630 is an abundant number, since it is smaller than the sum of its proper divisors (13160050).

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

12215630 is a wasteful number, since it uses less digits than its factorization.

12215630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1724.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 12215630 is about 3495.0865511458. The cubic root of 12215630 is about 230.3060198747.

Adding to 12215630 its reverse (3651221), we get a palindrome (15866851).

The spelling of 12215630 in words is "twelve million, two hundred fifteen thousand, six hundred thirty".