115813620 has 144 divisors (see below), whose sum is σ = 387459072. Its totient is φ = 27820800.

The previous prime is 115813603. The next prime is 115813657. The reversal of 115813620 is 26318511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 100045 + ... + 101195.

It is an arithmetic number, because the mean of its divisors is an integer number (2690688).

Almost surely, 2^115813620 is an apocalyptic number.

115813620 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 115813620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193729536).

115813620 is an abundant number, since it is smaller than the sum of its proper divisors (271645452).

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

115813620 is a wasteful number, since it uses less digits than its factorization.

115813620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222 (or 1217 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 115813620 is about 10761.6736616569. The cubic root of 115813620 is about 487.4385563586.

The spelling of 115813620 in words is "one hundred fifteen million, eight hundred thirteen thousand, six hundred twenty".