115240072 has 8 divisors (see below), whose sum is σ = 216075150. Its totient is φ = 57620032.

The previous prime is 115240057. The next prime is 115240079. The reversal of 115240072 is 270042511.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 115218756 + 21316 = 10734^2 + 146^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (115240079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7202497 + ... + 7202512.

Almost surely, 2^115240072 is an apocalyptic number.

It is an amenable number.

115240072 is a deficient number, since it is larger than the sum of its proper divisors (100835078).

115240072 is a wasteful number, since it uses less digits than its factorization.

115240072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14405015 (or 14405011 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 115240072 is about 10734.9928737750. The cubic root of 115240072 is about 486.6325711607.

Adding to 115240072 its reverse (270042511), we get a palindrome (385282583).

The spelling of 115240072 in words is "one hundred fifteen million, two hundred forty thousand, seventy-two".