115445040 has 40 divisors (see below), whose sum is σ = 357880368. Its totient is φ = 30785280.

The previous prime is 115445017. The next prime is 115445041. The reversal of 115445040 is 40544511.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 115445040.

It is not an unprimeable number, because it can be changed into a prime (115445041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240271 + ... + 240750.

Almost surely, 2^115445040 is an apocalyptic number.

115445040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115445040 is an abundant number, since it is smaller than the sum of its proper divisors (242435328).

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

115445040 is a wasteful number, since it uses less digits than its factorization.

115445040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481037 (or 481031 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 115445040 is about 10744.5353552399. The cubic root of 115445040 is about 486.9209113360.

Adding to 115445040 its reverse (40544511), we get a palindrome (155989551).

The spelling of 115445040 in words is "one hundred fifteen million, four hundred forty-five thousand, forty".