115211040 has 192 divisors, whose sum is σ = 439375104. Its totient is φ = 24772608.

The previous prime is 115211039. The next prime is 115211059. The reversal of 115211040 is 40112511.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56112 + ... + 58128.

It is an arithmetic number, because the mean of its divisors is an integer number (2288412).

Almost surely, 2^115211040 is an apocalyptic number.

115211040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115211040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219687552).

115211040 is an abundant number, since it is smaller than the sum of its proper divisors (324164064).

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

115211040 is a wasteful number, since it uses less digits than its factorization.

115211040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059 (or 2051 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 115211040 is about 10733.6405753127. The cubic root of 115211040 is about 486.5917025545.

Adding to 115211040 its reverse (40112511), we get a palindrome (155323551).

It can be divided in two parts, 11521 and 1040, that added together give a triangular number (12561 = T₁₅₈).

The spelling of 115211040 in words is "one hundred fifteen million, two hundred eleven thousand, forty".