43642428 has 24 divisors (see below), whose sum is σ = 102020688. Its totient is φ = 14520576.

The previous prime is 43642421. The next prime is 43642433. The reversal of 43642428 is 82424634.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43642421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4050 + ... + 10182.

It is an arithmetic number, because the mean of its divisors is an integer number (4250862).

Almost surely, 2^43642428 is an apocalyptic number.

It is an amenable number.

43642428 is an abundant number, since it is smaller than the sum of its proper divisors (58378260).

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

43642428 is a wasteful number, since it uses less digits than its factorization.

43642428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6733 (or 6731 counting only the distinct ones).

The product of its digits is 36864, while the sum is 33.

The square root of 43642428 is about 6606.2415941290. The cubic root of 43642428 is about 352.0759026228.

The spelling of 43642428 in words is "forty-three million, six hundred forty-two thousand, four hundred twenty-eight".