115288530 has 64 divisors (see below), whose sum is σ = 318090240. Its totient is φ = 26195904.

The previous prime is 115288529. The next prime is 115288531. The reversal of 115288530 is 35882511.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (115288529) and next prime (115288531).

It is a junction number, because it is equal to n+sod(n) for n = 115288491 and 115288500.

It is not an unprimeable number, because it can be changed into a prime (115288531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36057 + ... + 39123.

It is an arithmetic number, because the mean of its divisors is an integer number (4970160).

Almost surely, 2^115288530 is an apocalyptic number.

115288530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 115288530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159045120).

115288530 is an abundant number, since it is smaller than the sum of its proper divisors (202801710).

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

115288530 is a wasteful number, since it uses less digits than its factorization.

115288530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3263.

The product of its (nonzero) digits is 9600, while the sum is 33.

The square root of 115288530 is about 10737.2496478381. The cubic root of 115288530 is about 486.7007706340.

The spelling of 115288530 in words is "one hundred fifteen million, two hundred eighty-eight thousand, five hundred thirty".