43239680 has 144 divisors (see below), whose sum is σ = 117440064. Its totient is φ = 15114240.

The previous prime is 43239673. The next prime is 43239683. The reversal of 43239680 is 8693234.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 43239680.

It is not an unprimeable number, because it can be changed into a prime (43239683) 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, 520919 + ... + 521001.

It is an arithmetic number, because the mean of its divisors is an integer number (815556).

Almost surely, 2^43239680 is an apocalyptic number.

43239680 is a gapful number since it is divisible by the number (40) 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 43239680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58720032).

43239680 is an abundant number, since it is smaller than the sum of its proper divisors (74200384).

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

43239680 is a wasteful number, since it uses less digits than its factorization.

43239680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 43239680 is about 6575.6885571018. The cubic root of 43239680 is about 350.9895262876.

The spelling of 43239680 in words is "forty-three million, two hundred thirty-nine thousand, six hundred eighty".