1212863232 has 288 divisors, whose sum is σ = 4083028992. Its totient is φ = 311427072.

The previous prime is 1212863231. The next prime is 1212863261. The reversal of 1212863232 is 2323682121.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1212863232.

It is not an unprimeable number, because it can be changed into a prime (1212863231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2101728 + ... + 2102304.

It is an arithmetic number, because the mean of its divisors is an integer number (14177184).

Almost surely, 2^1212863232 is an apocalyptic number.

1212863232 is a gapful number since it is divisible by the number (12) 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 1212863232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2041514496).

1212863232 is an abundant number, since it is smaller than the sum of its proper divisors (2870165760).

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

1212863232 is a wasteful number, since it uses less digits than its factorization.

1212863232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643 (or 629 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 1212863232 is about 34826.1860099552. The cubic root of 1212863232 is about 1066.4420888314.

The spelling of 1212863232 in words is "one billion, two hundred twelve million, eight hundred sixty-three thousand, two hundred thirty-two".