115235440 has 20 divisors (see below), whose sum is σ = 267922584. Its totient is φ = 46094144.

The previous prime is 115235429. The next prime is 115235447. The reversal of 115235440 is 44532511.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115235447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 720142 + ... + 720301.

Almost surely, 2^115235440 is an apocalyptic number.

115235440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115235440 is an abundant number, since it is smaller than the sum of its proper divisors (152687144).

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

115235440 is a wasteful number, since it uses less digits than its factorization.

115235440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440456 (or 1440450 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 115235440 is about 10734.7771285668. Note that the first 3 decimals coincide. The cubic root of 115235440 is about 486.6260511131.

Adding to 115235440 its reverse (44532511), we get a palindrome (159767951).

The spelling of 115235440 in words is "one hundred fifteen million, two hundred thirty-five thousand, four hundred forty".