1215113460 has 288 divisors, whose sum is σ = 4118446080. Its totient is φ = 266238720.

The previous prime is 1215113453. The next prime is 1215113467. The reversal of 1215113460 is 643115121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1215113453) and next prime (1215113467).

It is a self number, because there is not a number n which added to its sum of digits gives 1215113460.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215113467) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3172429 + ... + 3172811.

It is an arithmetic number, because the mean of its divisors is an integer number (14300160).

Almost surely, 2^1215113460 is an apocalyptic number.

1215113460 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 1215113460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2059223040).

1215113460 is an abundant number, since it is smaller than the sum of its proper divisors (2903332620).

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

1215113460 is a wasteful number, since it uses less digits than its factorization.

1215113460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1215113460 is about 34858.4775915415. The cubic root of 1215113460 is about 1067.1012055489.

Adding to 1215113460 its reverse (643115121), we get a palindrome (1858228581).

The spelling of 1215113460 in words is "one billion, two hundred fifteen million, one hundred thirteen thousand, four hundred sixty".