115620100 has 36 divisors (see below), whose sum is σ = 259553700. Its totient is φ = 44652160.

The previous prime is 115620097. The next prime is 115620107. The reversal of 115620100 is 1026511.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1044484 + 114575616 = 1022^2 + 10704^2 .

It is not an unprimeable number, because it can be changed into a prime (115620107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17035 + ... + 22834.

It is an arithmetic number, because the mean of its divisors is an integer number (7209825).

Almost surely, 2^115620100 is an apocalyptic number.

115620100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115620100 is an abundant number, since it is smaller than the sum of its proper divisors (143933600).

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

115620100 is a wasteful number, since it uses less digits than its factorization.

115620100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39912 (or 39905 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 115620100 is about 10752.6787360174. The cubic root of 115620100 is about 487.1669081180.

Adding to 115620100 its reverse (1026511), we get a palindrome (116646611).

The spelling of 115620100 in words is "one hundred fifteen million, six hundred twenty thousand, one hundred".