115220440 has 16 divisors (see below), whose sum is σ = 259246080. Its totient is φ = 46088160.

The previous prime is 115220429. The next prime is 115220447. The reversal of 115220440 is 44022511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115220447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1440216 + ... + 1440295.

It is an arithmetic number, because the mean of its divisors is an integer number (16202880).

Almost surely, 2^115220440 is an apocalyptic number.

115220440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115220440 is an abundant number, since it is smaller than the sum of its proper divisors (144025640).

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

115220440 is a wasteful number, since it uses less digits than its factorization.

115220440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2880522 (or 2880518 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 115220440 is about 10734.0784420462. The cubic root of 115220440 is about 486.6049357701.

Adding to 115220440 its reverse (44022511), we get a palindrome (159242951).

The spelling of 115220440 in words is "one hundred fifteen million, two hundred twenty thousand, four hundred forty".