115255440 has 80 divisors (see below), whose sum is σ = 396998400. Its totient is φ = 30734208.

The previous prime is 115255433. The next prime is 115255447. The reversal of 115255440 is 44552511.

115255440 is a `hidden beast` number, since 115 + 2 + 5 + 544 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (115255433) and next prime (115255447).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (115255447) 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, 24520 + ... + 28839.

It is an arithmetic number, because the mean of its divisors is an integer number (4962480).

Almost surely, 2^115255440 is an apocalyptic number.

115255440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115255440 is an abundant number, since it is smaller than the sum of its proper divisors (281742960).

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

115255440 is a wasteful number, since it uses less digits than its factorization.

115255440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53381 (or 53369 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 115255440 is about 10735.7086398616. The cubic root of 115255440 is about 486.6542020535.

The spelling of 115255440 in words is "one hundred fifteen million, two hundred fifty-five thousand, four hundred forty".