115213340 has 96 divisors (see below), whose sum is σ = 284739840. Its totient is φ = 38707200.

The previous prime is 115213313. The next prime is 115213349. The reversal of 115213340 is 43312511.

It is a super-2 number, since 2×115213340² = 26548227427911200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115213349) 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, 179420 + ... + 180060.

It is an arithmetic number, because the mean of its divisors is an integer number (2966040).

Almost surely, 2^115213340 is an apocalyptic number.

115213340 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 115213340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142369920).

115213340 is an abundant number, since it is smaller than the sum of its proper divisors (169526500).

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

115213340 is a wasteful number, since it uses less digits than its factorization.

115213340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723 (or 721 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 115213340 is about 10733.7477145683. The cubic root of 115213340 is about 486.5949405355.

Adding to 115213340 its reverse (43312511), we get a palindrome (158525851).

The spelling of 115213340 in words is "one hundred fifteen million, two hundred thirteen thousand, three hundred forty".