1216232160 has 576 divisors, whose sum is σ = 4781306880. Its totient is φ = 257187840.

The previous prime is 1216232141. The next prime is 1216232183. The reversal of 1216232160 is 612326121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1216232160.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 25877257 + ... + 25877303.

It is an arithmetic number, because the mean of its divisors is an integer number (8300880).

Almost surely, 2^1216232160 is an apocalyptic number.

1216232160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1216232160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2390653440).

1216232160 is an abundant number, since it is smaller than the sum of its proper divisors (3565074720).

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

1216232160 is a wasteful number, since it uses less digits than its factorization.

1216232160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1216232160 is about 34874.5202117535. The cubic root of 1216232160 is about 1067.4285823732.

Adding to 1216232160 its reverse (612326121), we get a palindrome (1828558281).

The spelling of 1216232160 in words is "one billion, two hundred sixteen million, two hundred thirty-two thousand, one hundred sixty".