43091136 has 112 divisors (see below), whose sum is σ = 138257280. Its totient is φ = 13052160.

The previous prime is 43091131. The next prime is 43091137. The reversal of 43091136 is 63119034.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (43091131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17875 + ... + 20141.

It is an arithmetic number, because the mean of its divisors is an integer number (1234440).

Almost surely, 2^43091136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43091136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69128640).

43091136 is an abundant number, since it is smaller than the sum of its proper divisors (95166144).

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

43091136 is a wasteful number, since it uses less digits than its factorization.

43091136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2299 (or 2283 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 43091136 is about 6564.3839010222. The cubic root of 43091136 is about 350.5871396679.

It can be divided in two parts, 4309 and 1136, that added together give a palindrome (5445).

The spelling of 43091136 in words is "forty-three million, ninety-one thousand, one hundred thirty-six".