115489920 has 256 divisors, whose sum is σ = 453761280. Its totient is φ = 24330240.

The previous prime is 115489867. The next prime is 115489921. The reversal of 115489920 is 29984511.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115489921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174390 + ... + 175050.

It is an arithmetic number, because the mean of its divisors is an integer number (1772505).

Almost surely, 2^115489920 is an apocalyptic number.

115489920 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 115489920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226880640).

115489920 is an abundant number, since it is smaller than the sum of its proper divisors (338271360).

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

115489920 is a wasteful number, since it uses less digits than its factorization.

115489920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703 (or 691 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 39.

The square root of 115489920 is about 10746.6236558279. The cubic root of 115489920 is about 486.9840010373.

The spelling of 115489920 in words is "one hundred fifteen million, four hundred eighty-nine thousand, nine hundred twenty".