43000720 has 80 divisors (see below), whose sum is σ = 117992448. Its totient is φ = 14261760.

The previous prime is 43000717. The next prime is 43000721. The reversal of 43000720 is 2700034.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 43000694 and 43000703.

It is not an unprimeable number, because it can be changed into a prime (43000721) 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, 16122 + ... + 18598.

Almost surely, 2^43000720 is an apocalyptic number.

43000720 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 43000720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58996224).

43000720 is an abundant number, since it is smaller than the sum of its proper divisors (74991728).

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

43000720 is a wasteful number, since it uses less digits than its factorization.

43000720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2528 (or 2522 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 43000720 is about 6557.4934235575. The cubic root of 43000720 is about 350.3417614127.

Adding to 43000720 its reverse (2700034), we get a palindrome (45700754).

The spelling of 43000720 in words is "forty-three million, seven hundred twenty", and thus it is an aban number.