115747840 has 176 divisors, whose sum is σ = 313633152. Its totient is φ = 40697856.

The previous prime is 115747817. The next prime is 115747843. The reversal of 115747840 is 48747511.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 115747840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115747843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2462697 + ... + 2462743.

Almost surely, 2^115747840 is an apocalyptic number.

115747840 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 115747840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156816576).

115747840 is an abundant number, since it is smaller than the sum of its proper divisors (197885312).

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

115747840 is a wasteful number, since it uses less digits than its factorization.

115747840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 115747840 is about 10758.6170114936. The cubic root of 115747840 is about 487.3462535112.

The spelling of 115747840 in words is "one hundred fifteen million, seven hundred forty-seven thousand, eight hundred forty".