115928281 has 8 divisors (see below), whose sum is σ = 132580224. Its totient is φ = 99299040.

The previous prime is 115928269. The next prime is 115928297. The reversal of 115928281 is 182829511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115928281 - 2⁵ = 115928249 is a prime.

It is a super-2 number, since 2×115928281² = 26878732671229922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 115928281.

It is not an unprimeable number, because it can be changed into a prime (115928221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7236 + ... + 16858.

It is an arithmetic number, because the mean of its divisors is an integer number (16572528).

Almost surely, 2^115928281 is an apocalyptic number.

It is an amenable number.

115928281 is a deficient number, since it is larger than the sum of its proper divisors (16651943).

115928281 is an equidigital number, since it uses as much as digits as its factorization.

115928281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11351.

The product of its digits is 11520, while the sum is 37.

The square root of 115928281 is about 10766.9996284945. Note that the first 3 decimals coincide. The cubic root of 115928281 is about 487.5993657631.

The spelling of 115928281 in words is "one hundred fifteen million, nine hundred twenty-eight thousand, two hundred eighty-one".