43539028 has 24 divisors (see below), whose sum is σ = 82234152. Its totient is φ = 20050944.

The previous prime is 43539017. The next prime is 43539031. The reversal of 43539028 is 82093534.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18818244 + 24720784 = 4338^2 + 4972^2 .

It is a junction number, because it is equal to n+sod(n) for n = 43538984 and 43539002.

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, 44076 + ... + 45052.

It is an arithmetic number, because the mean of its divisors is an integer number (3426423).

Almost surely, 2^43539028 is an apocalyptic number.

It is an amenable number.

43539028 is a deficient number, since it is larger than the sum of its proper divisors (38695124).

43539028 is a wasteful number, since it uses less digits than its factorization.

43539028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851 (or 1849 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 43539028 is about 6598.4110208443. The cubic root of 43539028 is about 351.7976303197.

The spelling of 43539028 in words is "forty-three million, five hundred thirty-nine thousand, twenty-eight".