115805280 has 48 divisors (see below), whose sum is σ = 364788144. Its totient is φ = 30881280.

The previous prime is 115805273. The next prime is 115805311. The reversal of 115805280 is 82508511.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120151 + ... + 121110.

It is an arithmetic number, because the mean of its divisors is an integer number (7599753).

Almost surely, 2^115805280 is an apocalyptic number.

115805280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115805280 is an abundant number, since it is smaller than the sum of its proper divisors (248982864).

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

115805280 is a wasteful number, since it uses less digits than its factorization.

115805280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241279 (or 241271 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 30.

The square root of 115805280 is about 10761.2861684838. The cubic root of 115805280 is about 487.4268555611.

The spelling of 115805280 in words is "one hundred fifteen million, eight hundred five thousand, two hundred eighty".