43397424 has 160 divisors (see below), whose sum is σ = 144752640. Its totient is φ = 12192768.

The previous prime is 43397399. The next prime is 43397429. The reversal of 43397424 is 42479334.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

Its product of digits (72576) is a multiple of the sum of its prime divisors (252).

It is a zygodrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43397429) 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, 341649 + ... + 341775.

It is an arithmetic number, because the mean of its divisors is an integer number (904704).

Almost surely, 2^43397424 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 43397424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72376320).

43397424 is an abundant number, since it is smaller than the sum of its proper divisors (101355216).

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

43397424 is a wasteful number, since it uses less digits than its factorization.

43397424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 252 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 43397424 is about 6587.6721229885. The cubic root of 43397424 is about 351.4158268515.

The spelling of 43397424 in words is "forty-three million, three hundred ninety-seven thousand, four hundred twenty-four".