115512216 has 64 divisors (see below), whose sum is σ = 294174720. Its totient is φ = 37793280.

The previous prime is 115512193. The next prime is 115512217. The reversal of 115512216 is 612215511.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115512217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 517881 + ... + 518103.

It is an arithmetic number, because the mean of its divisors is an integer number (4596480).

Almost surely, 2^115512216 is an apocalyptic number.

It is an amenable number.

115512216 is an abundant number, since it is smaller than the sum of its proper divisors (178662504).

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

115512216 is a wasteful number, since it uses less digits than its factorization.

115512216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536 (or 532 counting only the distinct ones).

The product of its digits is 600, while the sum is 24.

The square root of 115512216 is about 10747.6609548311. The cubic root of 115512216 is about 487.0153373843.

Adding to 115512216 its reverse (612215511), we get a palindrome (727727727).

The spelling of 115512216 in words is "one hundred fifteen million, five hundred twelve thousand, two hundred sixteen".