115220320 has 24 divisors (see below), whose sum is σ = 272208384. Its totient is φ = 46088064.

The previous prime is 115220311. The next prime is 115220341. The reversal of 115220320 is 23022511.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 115220294 and 115220303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359904 + ... + 360223.

It is an arithmetic number, because the mean of its divisors is an integer number (11342016).

Almost surely, 2^115220320 is an apocalyptic number.

115220320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115220320 is an abundant number, since it is smaller than the sum of its proper divisors (156988064).

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

115220320 is an equidigital number, since it uses as much as digits as its factorization.

115220320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720142 (or 720134 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 115220320 is about 10734.0728523706. The cubic root of 115220320 is about 486.6047668400.

Adding to 115220320 its reverse (23022511), we get a palindrome (138242831).

The spelling of 115220320 in words is "one hundred fifteen million, two hundred twenty thousand, three hundred twenty".