115320285 has 24 divisors (see below), whose sum is σ = 201875544. Its totient is φ = 60892800.

The previous prime is 115320277. The next prime is 115320307. The reversal of 115320285 is 582023511.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8259876 + 107060409 = 2874^2 + 10347^2 .

It is not a de Polignac number, because 115320285 - 2³ = 115320277 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8142 + ... + 17231.

It is an arithmetic number, because the mean of its divisors is an integer number (8411481).

Almost surely, 2^115320285 is an apocalyptic number.

115320285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115320285 is a deficient number, since it is larger than the sum of its proper divisors (86555259).

115320285 is a wasteful number, since it uses less digits than its factorization.

115320285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25485 (or 25482 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 115320285 is about 10738.7282766629. The cubic root of 115320285 is about 486.7454520497.

Adding to 115320285 its reverse (582023511), we get a palindrome (697343796).

It can be divided in two parts, 115 and 320285, that added together give a triangular number (320400 = T₈₀₀).

The spelling of 115320285 in words is "one hundred fifteen million, three hundred twenty thousand, two hundred eighty-five".