1213784432 has 40 divisors (see below), whose sum is σ = 2724501216. Its totient is φ = 513063936.

The previous prime is 1213784423. The next prime is 1213784477. The reversal of 1213784432 is 2344873121.

It is a junction number, because it is equal to n+sod(n) for n = 1213784392 and 1213784401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66053 + ... + 82404.

Almost surely, 2^1213784432 is an apocalyptic number.

It is an amenable number.

1213784432 is an abundant number, since it is smaller than the sum of its proper divisors (1510716784).

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

1213784432 is a wasteful number, since it uses less digits than its factorization.

1213784432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148545 (or 148539 counting only the distinct ones).

The product of its digits is 32256, while the sum is 35.

The square root of 1213784432 is about 34839.4091798354. The cubic root of 1213784432 is about 1066.7120169955.

It can be divided in two parts, 12137 and 84432, that added together give a palindrome (96569).

The spelling of 1213784432 in words is "one billion, two hundred thirteen million, seven hundred eighty-four thousand, four hundred thirty-two".