115304640 has 224 divisors, whose sum is σ = 408188160. Its totient is φ = 27340800.

The previous prime is 115304621. The next prime is 115304647. The reversal of 115304640 is 46403511.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 115304640.

It is not an unprimeable number, because it can be changed into a prime (115304647) 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, 644071 + ... + 644249.

Almost surely, 2^115304640 is an apocalyptic number.

115304640 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 115304640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204094080).

115304640 is an abundant number, since it is smaller than the sum of its proper divisors (292883520).

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

115304640 is a wasteful number, since it uses less digits than its factorization.

115304640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 115304640 is about 10737.9998137456. Note that the first 3 decimals coincide. The cubic root of 115304640 is about 486.7234395101.

The spelling of 115304640 in words is "one hundred fifteen million, three hundred four thousand, six hundred forty".