43550028 has 24 divisors (see below), whose sum is σ = 112907760. Its totient is φ = 14516640.

The previous prime is 43550027. The next prime is 43550041. The reversal of 43550028 is 82005534.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 43549983 and 43550010.

It is not an unprimeable number, because it can be changed into a prime (43550027) 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, 201513 + ... + 201728.

It is an arithmetic number, because the mean of its divisors is an integer number (4704490).

Almost surely, 2^43550028 is an apocalyptic number.

It is an amenable number.

43550028 is an abundant number, since it is smaller than the sum of its proper divisors (69357732).

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

43550028 is a wasteful number, since it uses less digits than its factorization.

43550028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403254 (or 403246 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 43550028 is about 6599.2445022139. The cubic root of 43550028 is about 351.8272546841.

The spelling of 43550028 in words is "forty-three million, five hundred fifty thousand, twenty-eight".