115201280 has 36 divisors (see below), whose sum is σ = 275946132. Its totient is φ = 46080000.

The previous prime is 115201279. The next prime is 115201283. The reversal of 115201280 is 82102511.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 91853056 + 23348224 = 9584^2 + 4832^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115201283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43721 + ... + 46280.

Almost surely, 2^115201280 is an apocalyptic number.

115201280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115201280 is an abundant number, since it is smaller than the sum of its proper divisors (160744852).

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

115201280 is an frugal number, since it uses more digits than its factorization.

115201280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90022 (or 90008 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 115201280 is about 10733.1859203128. The cubic root of 115201280 is about 486.5779617731.

Adding to 115201280 its reverse (82102511), we get a palindrome (197303791).

It can be divided in two parts, 11520 and 1280, that multiplied together give a square (14745600 = 3840²).

The spelling of 115201280 in words is "one hundred fifteen million, two hundred one thousand, two hundred eighty".