115215450 has 96 divisors (see below), whose sum is σ = 328800384. Its totient is φ = 26154240.

The previous prime is 115215433. The next prime is 115215469. The reversal of 115215450 is 54512511.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 115215450.

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, 206572 + ... + 207128.

It is an arithmetic number, because the mean of its divisors is an integer number (3425004).

Almost surely, 2^115215450 is an apocalyptic number.

115215450 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 115215450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164400192).

115215450 is an abundant number, since it is smaller than the sum of its proper divisors (213584934).

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

115215450 is a wasteful number, since it uses less digits than its factorization.

115215450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776 (or 771 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 115215450 is about 10733.8460022491. The cubic root of 115215450 is about 486.5979109931.

Adding to 115215450 its reverse (54512511), we get a palindrome (169727961).

The spelling of 115215450 in words is "one hundred fifteen million, two hundred fifteen thousand, four hundred fifty".