43213340 has 24 divisors (see below), whose sum is σ = 90895392. Its totient is φ = 17257280.

The previous prime is 43213319. The next prime is 43213367. The reversal of 43213340 is 4331234.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14585 + ... + 17295.

It is an arithmetic number, because the mean of its divisors is an integer number (3787308).

Almost surely, 2^43213340 is an apocalyptic number.

It is an amenable number.

43213340 is an abundant number, since it is smaller than the sum of its proper divisors (47682052).

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

43213340 is a wasteful number, since it uses less digits than its factorization.

43213340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3517 (or 3515 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 43213340 is about 6573.6854199148. The cubic root of 43213340 is about 350.9182419025.

Adding to 43213340 its reverse (4331234), we get a palindrome (47544574).

The spelling of 43213340 in words is "forty-three million, two hundred thirteen thousand, three hundred forty".