43129380 has 96 divisors (see below), whose sum is σ = 142813440. Its totient is φ = 9515520.

The previous prime is 43129367. The next prime is 43129397. The reversal of 43129380 is 8392134.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10410 + ... + 13950.

It is an arithmetic number, because the mean of its divisors is an integer number (1487640).

Almost surely, 2^43129380 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 43129380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71406720).

43129380 is an abundant number, since it is smaller than the sum of its proper divisors (99684060).

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

43129380 is a wasteful number, since it uses less digits than its factorization.

43129380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3589 (or 3587 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 43129380 is about 6567.2962473152. The cubic root of 43129380 is about 350.6908260345.

The spelling of 43129380 in words is "forty-three million, one hundred twenty-nine thousand, three hundred eighty".