115187940 has 192 divisors, whose sum is σ = 423198720. Its totient is φ = 25453440.

The previous prime is 115187939. The next prime is 115187953. The reversal of 115187940 is 49781511.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 115187895 and 115187904.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 116689 + ... + 117671.

It is an arithmetic number, because the mean of its divisors is an integer number (2204160).

Almost surely, 2^115187940 is an apocalyptic number.

115187940 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 115187940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211599360).

115187940 is an abundant number, since it is smaller than the sum of its proper divisors (308010780).

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

115187940 is a wasteful number, since it uses less digits than its factorization.

115187940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039 (or 1031 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The square root of 115187940 is about 10732.5644652152. The cubic root of 115187940 is about 486.5591795728.

The spelling of 115187940 in words is "one hundred fifteen million, one hundred eighty-seven thousand, nine hundred forty".