43213680 has 120 divisors (see below), whose sum is σ = 148329792. Its totient is φ = 11269632.

The previous prime is 43213637. The next prime is 43213693. The reversal of 43213680 is 8631234.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33202 + ... + 34478.

Almost surely, 2^43213680 is an apocalyptic number.

43213680 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 43213680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74164896).

43213680 is an abundant number, since it is smaller than the sum of its proper divisors (105116112).

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

43213680 is a wasteful number, since it uses less digits than its factorization.

43213680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343 (or 1334 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 43213680 is about 6573.7112805477. The cubic root of 43213680 is about 350.9191622347.

It can be divided in two parts, 4321 and 3680, that added together give a triangular number (8001 = T₁₂₆).

The spelling of 43213680 in words is "forty-three million, two hundred thirteen thousand, six hundred eighty".