43613928 has 48 divisors (see below), whose sum is σ = 118630980. Its totient is φ = 14475264.

The previous prime is 43613917. The next prime is 43613953. The reversal of 43613928 is 82931634.

It can be written as a sum of positive squares in 2 ways, for example, as 42536484 + 1077444 = 6522^2 + 1038^2 .

It is a hoax number, since the sum of its digits (36) 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 (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 43613892 and 43613901.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17326 + ... + 19682.

Almost surely, 2^43613928 is an apocalyptic number.

It is an amenable number.

43613928 is an abundant number, since it is smaller than the sum of its proper divisors (75017052).

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

43613928 is a wasteful number, since it uses less digits than its factorization.

43613928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2626 (or 2619 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 43613928 is about 6604.0841908625. The cubic root of 43613928 is about 351.9992467270. Note that the first 3 decimals are identical.

The spelling of 43613928 in words is "forty-three million, six hundred thirteen thousand, nine hundred twenty-eight".