1212504432 has 80 divisors (see below), whose sum is σ = 3279194880. Its totient is φ = 385330176.

The previous prime is 1212504401. The next prime is 1212504443. The reversal of 1212504432 is 2344052121.

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

It is a congruent number.

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, 370419 + ... + 373677.

It is an arithmetic number, because the mean of its divisors is an integer number (40989936).

Almost surely, 2^1212504432 is an apocalyptic number.

1212504432 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 1212504432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1639597440).

1212504432 is an abundant number, since it is smaller than the sum of its proper divisors (2066690448).

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

1212504432 is a wasteful number, since it uses less digits than its factorization.

1212504432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3630 (or 3624 counting only the distinct ones).

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

The square root of 1212504432 is about 34821.0343327133. The cubic root of 1212504432 is about 1066.3369169952.

Adding to 1212504432 its reverse (2344052121), we get a palindrome (3556556553).

The spelling of 1212504432 in words is "one billion, two hundred twelve million, five hundred four thousand, four hundred thirty-two".