1215232224 has 24 divisors (see below), whose sum is σ = 3189984840. Its totient is φ = 405077376.

The previous prime is 1215232223. The next prime is 1215232243. The reversal of 1215232224 is 4222325121.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 1215232194 and 1215232203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215232223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6329239 + ... + 6329430.

It is an arithmetic number, because the mean of its divisors is an integer number (132916035).

Almost surely, 2^1215232224 is an apocalyptic number.

It is an amenable number.

1215232224 is an abundant number, since it is smaller than the sum of its proper divisors (1974752616).

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

1215232224 is a wasteful number, since it uses less digits than its factorization.

1215232224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12658682 (or 12658674 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 1215232224 is about 34860.1810666554. The cubic root of 1215232224 is about 1067.1359702254.

Adding to 1215232224 its reverse (4222325121), we get a palindrome (5437557345).

The spelling of 1215232224 in words is "one billion, two hundred fifteen million, two hundred thirty-two thousand, two hundred twenty-four".