115055820 has 72 divisors (see below), whose sum is σ = 380736720. Its totient is φ = 27891840.

The previous prime is 115055807. The next prime is 115055839. The reversal of 115055820 is 28550511.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27075 + ... + 31034.

It is an arithmetic number, because the mean of its divisors is an integer number (5288010).

Almost surely, 2^115055820 is an apocalyptic number.

115055820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115055820 is an abundant number, since it is smaller than the sum of its proper divisors (265680900).

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

115055820 is a wasteful number, since it uses less digits than its factorization.

115055820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58135 (or 58130 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

The square root of 115055820 is about 10726.4075999376. The cubic root of 115055820 is about 486.3730814090.

The spelling of 115055820 in words is "one hundred fifteen million, fifty-five thousand, eight hundred twenty".