115145440 has 24 divisors (see below), whose sum is σ = 272031480. Its totient is φ = 46058112.

The previous prime is 115145431. The next prime is 115145477. The reversal of 115145440 is 44541511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359670 + ... + 359989.

It is an arithmetic number, because the mean of its divisors is an integer number (11334645).

Almost surely, 2^115145440 is an apocalyptic number.

115145440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115145440 is an abundant number, since it is smaller than the sum of its proper divisors (156886040).

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

115145440 is an equidigital number, since it uses as much as digits as its factorization.

115145440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719674 (or 719666 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 115145440 is about 10730.5843270532. The cubic root of 115145440 is about 486.4993315572.

Adding to 115145440 its reverse (44541511), we get a palindrome (159686951).

The spelling of 115145440 in words is "one hundred fifteen million, one hundred forty-five thousand, four hundred forty".