115144040 has 64 divisors (see below), whose sum is σ = 285534720. Its totient is φ = 41440000.

The previous prime is 115144033. The next prime is 115144063. The reversal of 115144040 is 40441511.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43145 + ... + 45735.

It is an arithmetic number, because the mean of its divisors is an integer number (4461480).

Almost surely, 2^115144040 is an apocalyptic number.

115144040 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 115144040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142767360).

115144040 is an abundant number, since it is smaller than the sum of its proper divisors (170390680).

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

115144040 is a wasteful number, since it uses less digits than its factorization.

115144040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2714 (or 2710 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 115144040 is about 10730.5190927560. The cubic root of 115144040 is about 486.4973598426.

Adding to 115144040 its reverse (40441511), we get a palindrome (155585551).

The spelling of 115144040 in words is "one hundred fifteen million, one hundred forty-four thousand, forty".