115437440 has 32 divisors (see below), whose sum is σ = 275969160. Its totient is φ = 46174720.

The previous prime is 115437389. The next prime is 115437457. The reversal of 115437440 is 44734511.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-3 number, since 3×115437440³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 89546 + ... + 90825.

Almost surely, 2^115437440 is an apocalyptic number.

115437440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115437440 is an abundant number, since it is smaller than the sum of its proper divisors (160531720).

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

115437440 is an equidigital number, since it uses as much as digits as its factorization.

115437440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180390 (or 180378 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 115437440 is about 10744.1816812636. The cubic root of 115437440 is about 486.9102260779.

The spelling of 115437440 in words is "one hundred fifteen million, four hundred thirty-seven thousand, four hundred forty".