43421624 has 16 divisors (see below), whose sum is σ = 83401920. Its totient is φ = 21181120.

The previous prime is 43421603. The next prime is 43421627. The reversal of 43421624 is 42612434.

It is a junction number, because it is equal to n+sod(n) for n = 43421593 and 43421602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43421627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65864 + ... + 66519.

It is an arithmetic number, because the mean of its divisors is an integer number (5212620).

Almost surely, 2^43421624 is an apocalyptic number.

It is an amenable number.

43421624 is a deficient number, since it is larger than the sum of its proper divisors (39980296).

43421624 is a wasteful number, since it uses less digits than its factorization.

43421624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132430 (or 132426 counting only the distinct ones).

The product of its digits is 4608, while the sum is 26.

The square root of 43421624 is about 6589.5086311500. The cubic root of 43421624 is about 351.4811355108.

The spelling of 43421624 in words is "forty-three million, four hundred twenty-one thousand, six hundred twenty-four".