115452640 has 96 divisors (see below), whose sum is σ = 287945280. Its totient is φ = 43659264.

The previous prime is 115452613. The next prime is 115452643. The reversal of 115452640 is 46254511.

It is a junction number, because it is equal to n+sod(n) for n = 115452599 and 115452608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115452643) 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, 504046 + ... + 504274.

It is an arithmetic number, because the mean of its divisors is an integer number (2999430).

Almost surely, 2^115452640 is an apocalyptic number.

115452640 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 115452640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143972640).

115452640 is an abundant number, since it is smaller than the sum of its proper divisors (172492640).

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

115452640 is a wasteful number, since it uses less digits than its factorization.

115452640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 115452640 is about 10744.8890175748. The cubic root of 115452640 is about 486.9315961251.

The spelling of 115452640 in words is "one hundred fifteen million, four hundred fifty-two thousand, six hundred forty".