43380736 has 104 divisors (see below), whose sum is σ = 106155360. Its totient is φ = 17301504.

The previous prime is 43380731. The next prime is 43380739. The reversal of 43380736 is 63708334.

It is a happy number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43380731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 487380 + ... + 487468.

Almost surely, 2^43380736 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 43380736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53077680).

43380736 is an abundant number, since it is smaller than the sum of its proper divisors (62774624).

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

43380736 is an equidigital number, since it uses as much as digits as its factorization.

43380736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 43380736 is about 6586.4053929287. The cubic root of 43380736 is about 351.3707767184.

The spelling of 43380736 in words is "forty-three million, three hundred eighty thousand, seven hundred thirty-six".