1215314432 has 40 divisors (see below), whose sum is σ = 2493922596. Its totient is φ = 591224832.

The previous prime is 1215314431. The next prime is 1215314437. The reversal of 1215314432 is 2344135121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 858255616 + 357058816 = 29296^2 + 18896^2 .

It is not an unprimeable number, because it can be changed into a prime (1215314431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13133 + ... + 51020.

Almost surely, 2^1215314432 is an apocalyptic number.

It is an amenable number.

1215314432 is an abundant number, since it is smaller than the sum of its proper divisors (1278608164).

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

1215314432 is an frugal number, since it uses more digits than its factorization.

1215314432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64208 (or 64192 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 1215314432 is about 34861.3601570564. The cubic root of 1215314432 is about 1067.1600328788.

Adding to 1215314432 its reverse (2344135121), we get a palindrome (3559449553).

The spelling of 1215314432 in words is "one billion, two hundred fifteen million, three hundred fourteen thousand, four hundred thirty-two".