1212616832 has 128 divisors (see below), whose sum is σ = 2878848000. Its totient is φ = 497848320.

The previous prime is 1212616829. The next prime is 1212616849. The reversal of 1212616832 is 2386162121.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 4138478 + ... + 4138770.

It is an arithmetic number, because the mean of its divisors is an integer number (22491000).

Almost surely, 2^1212616832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212616832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1439424000).

1212616832 is an abundant number, since it is smaller than the sum of its proper divisors (1666231168).

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

1212616832 is a wasteful number, since it uses less digits than its factorization.

1212616832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494 (or 482 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 1212616832 is about 34822.6482623019. The cubic root of 1212616832 is about 1066.3698660338.

Adding to 1212616832 its reverse (2386162121), we get a palindrome (3598778953).

The spelling of 1212616832 in words is "one billion, two hundred twelve million, six hundred sixteen thousand, eight hundred thirty-two".