115840072 has 8 divisors (see below), whose sum is σ = 217200150. Its totient is φ = 57920032.

The previous prime is 115840063. The next prime is 115840073. The reversal of 115840072 is 270048511.

It can be written as a sum of positive squares in only one way, i.e., 100520676 + 15319396 = 10026^2 + 3914^2 .

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

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 115840072.

It is not an unprimeable number, because it can be changed into a prime (115840073) 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 as a sum of consecutive naturals, namely, 7239997 + ... + 7240012.

Almost surely, 2^115840072 is an apocalyptic number.

It is an amenable number.

115840072 is a deficient number, since it is larger than the sum of its proper divisors (101360078).

115840072 is a wasteful number, since it uses less digits than its factorization.

115840072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14480015 (or 14480011 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 115840072 is about 10762.9025824821. The cubic root of 115840072 is about 487.4756640931.

Adding to 115840072 its reverse (270048511), we get a palindrome (385888583).

The spelling of 115840072 in words is "one hundred fifteen million, eight hundred forty thousand, seventy-two".