1215134360 has 128 divisors (see below), whose sum is σ = 3160166400. Its totient is φ = 415872000.

The previous prime is 1215134357. The next prime is 1215134383. The reversal of 1215134360 is 634315121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1596380 + ... + 1597140.

It is an arithmetic number, because the mean of its divisors is an integer number (24688800).

Almost surely, 2^1215134360 is an apocalyptic number.

1215134360 is a gapful number since it is divisible by the number (10) 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 1215134360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1580083200).

1215134360 is an abundant number, since it is smaller than the sum of its proper divisors (1945032040).

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

1215134360 is a wasteful number, since it uses less digits than its factorization.

1215134360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993 (or 989 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1215134360 is about 34858.7773738552. Note that the first 3 decimals coincide. The cubic root of 1215134360 is about 1067.1073235749.

Adding to 1215134360 its reverse (634315121), we get a palindrome (1849449481).

The spelling of 1215134360 in words is "one billion, two hundred fifteen million, one hundred thirty-four thousand, three hundred sixty".