115747920 has 160 divisors (see below), whose sum is σ = 408723840. Its totient is φ = 30090240.

The previous prime is 115747909. The next prime is 115747949. The reversal of 115747920 is 29747511.

It is a happy number.

115747920 is a `hidden beast` number, since 11 + 574 + 79 + 2 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87907 + ... + 89213.

It is an arithmetic number, because the mean of its divisors is an integer number (2554524).

Almost surely, 2^115747920 is an apocalyptic number.

115747920 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 115747920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204361920).

115747920 is an abundant number, since it is smaller than the sum of its proper divisors (292975920).

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

115747920 is a wasteful number, since it uses less digits than its factorization.

115747920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370 (or 1358 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 115747920 is about 10758.6207294430. The cubic root of 115747920 is about 487.3463657889.

The spelling of 115747920 in words is "one hundred fifteen million, seven hundred forty-seven thousand, nine hundred twenty".