115107720 has 256 divisors, whose sum is σ = 433520640. Its totient is φ = 23804928.

The previous prime is 115107701. The next prime is 115107779. The reversal of 115107720 is 27701511.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 906297 + ... + 906423.

It is an arithmetic number, because the mean of its divisors is an integer number (1693440).

Almost surely, 2^115107720 is an apocalyptic number.

115107720 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 115107720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216760320).

115107720 is an abundant number, since it is smaller than the sum of its proper divisors (318412920).

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

115107720 is a wasteful number, since it uses less digits than its factorization.

115107720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 490, while the sum is 24.

The square root of 115107720 is about 10728.8265900796. The cubic root of 115107720 is about 486.4462023467.

The spelling of 115107720 in words is "one hundred fifteen million, one hundred seven thousand, seven hundred twenty".