115139332 has 72 divisors (see below), whose sum is σ = 260245440. Its totient is φ = 43300800.

The previous prime is 115139329. The next prime is 115139333. The reversal of 115139332 is 233931511.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 115139332.

It is not an unprimeable number, because it can be changed into a prime (115139333) 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 23 ways as a sum of consecutive naturals, for example, 295794 + ... + 296182.

It is an arithmetic number, because the mean of its divisors is an integer number (3614520).

Almost surely, 2^115139332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115139332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130122720).

115139332 is an abundant number, since it is smaller than the sum of its proper divisors (145106108).

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

115139332 is a wasteful number, since it uses less digits than its factorization.

115139332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473 (or 440 counting only the distinct ones).

The product of its digits is 2430, while the sum is 28.

The square root of 115139332 is about 10730.2997162241. The cubic root of 115139332 is about 486.4907291309.

The spelling of 115139332 in words is "one hundred fifteen million, one hundred thirty-nine thousand, three hundred thirty-two".