115215030 has 96 divisors (see below), whose sum is σ = 344448000. Its totient is φ = 26174016.

The previous prime is 115215019. The next prime is 115215041. The reversal of 115215030 is 30512511.

It is an interprime number because it is at equal distance from previous prime (115215019) and next prime (115215041).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 115214994 and 115215012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 124911 + ... + 125829.

It is an arithmetic number, because the mean of its divisors is an integer number (3588000).

Almost surely, 2^115215030 is an apocalyptic number.

115215030 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 115215030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172224000).

115215030 is an abundant number, since it is smaller than the sum of its proper divisors (229232970).

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

115215030 is a wasteful number, since it uses less digits than its factorization.

115215030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138 (or 1135 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 115215030 is about 10733.8264379484. The cubic root of 115215030 is about 486.5973197201.

Adding to 115215030 its reverse (30512511), we get a palindrome (145727541).

The spelling of 115215030 in words is "one hundred fifteen million, two hundred fifteen thousand, thirty".