115211340 has 72 divisors (see below), whose sum is σ = 358940400. Its totient is φ = 29890944.

The previous prime is 115211333. The next prime is 115211351. The reversal of 115211340 is 43112511.

115211340 is a `hidden beast` number, since 11 + 521 + 134 + 0 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1990 + ... + 15309.

Almost surely, 2^115211340 is an apocalyptic number.

115211340 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 115211340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179470200).

115211340 is an abundant number, since it is smaller than the sum of its proper divisors (243729060).

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

115211340 is a wasteful number, since it uses less digits than its factorization.

115211340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17351 (or 17346 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 115211340 is about 10733.6545500589. The cubic root of 115211340 is about 486.5921249023.

Adding to 115211340 its reverse (43112511), we get a palindrome (158323851).

The spelling of 115211340 in words is "one hundred fifteen million, two hundred eleven thousand, three hundred forty".