115048440 has 288 divisors, whose sum is σ = 424794240. Its totient is φ = 26956800.

The previous prime is 115048397. The next prime is 115048441. The reversal of 115048440 is 44840511.

It is a happy number.

It is a harmonic number, since the harmonic mean of its divisors is an integer.

It is a super-2 number, since 2×115048440² = 26472287092867200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115048441) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1886010 + ... + 1886070.

It is an arithmetic number, because the mean of its divisors is an integer number (1474980).

Almost surely, 2^115048440 is an apocalyptic number.

115048440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115048440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212397120).

115048440 is an abundant number, since it is smaller than the sum of its proper divisors (309745800).

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

115048440 is a wasteful number, since it uses less digits than its factorization.

115048440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 115048440 is about 10726.0635836266. The cubic root of 115048440 is about 486.3626820797.

Adding to 115048440 its reverse (44840511), we get a palindrome (159888951).

The spelling of 115048440 in words is "one hundred fifteen million, forty-eight thousand, four hundred forty".