43115730 has 128 divisors (see below), whose sum is σ = 126074880. Its totient is φ = 9227520.

The previous prime is 43115719. The next prime is 43115749. The reversal of 43115730 is 3751134.

It is a self number, because there is not a number n which added to its sum of digits gives 43115730.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 240781 + ... + 240959.

It is an arithmetic number, because the mean of its divisors is an integer number (984960).

Almost surely, 2^43115730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43115730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63037440).

43115730 is an abundant number, since it is smaller than the sum of its proper divisors (82959150).

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

43115730 is a wasteful number, since it uses less digits than its factorization.

43115730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 43115730 is about 6566.2569246109. The cubic root of 43115730 is about 350.6538254650.

Adding to 43115730 its reverse (3751134), we get a palindrome (46866864).

It can be divided in two parts, 431 and 15730, that added together give a palindrome (16161).

The spelling of 43115730 in words is "forty-three million, one hundred fifteen thousand, seven hundred thirty".