1115215080 has 256 divisors, whose sum is σ = 3992371200. Its totient is φ = 243855360.

The previous prime is 1115215069. The next prime is 1115215091. The reversal of 1115215080 is 805125111.

It is an interprime number because it is at equal distance from previous prime (1115215069) and next prime (1115215091).

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

It is a self number, because there is not a number n which added to its sum of digits gives 1115215080.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2942331 + ... + 2942709.

It is an arithmetic number, because the mean of its divisors is an integer number (15595200).

Almost surely, 2^1115215080 is an apocalyptic number.

1115215080 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 1115215080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1996185600).

1115215080 is an abundant number, since it is smaller than the sum of its proper divisors (2877156120).

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

1115215080 is a wasteful number, since it uses less digits than its factorization.

1115215080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544 (or 540 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 24.

The square root of 1115215080 is about 33394.8361277608. The cubic root of 1115215080 is about 1037.0178004060.

The spelling of 1115215080 in words is "one billion, one hundred fifteen million, two hundred fifteen thousand, eighty".