43878066 has 16 divisors (see below), whose sum is σ = 91571904. Its totient is φ = 13990064.

The previous prime is 43878061. The next prime is 43878067. The reversal of 43878066 is 66087834.

43878066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×43878066³ (a number of 24 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (43878061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158841 + ... + 159116.

It is an arithmetic number, because the mean of its divisors is an integer number (5723244).

Almost surely, 2^43878066 is an apocalyptic number.

43878066 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

43878066 is an abundant number, since it is smaller than the sum of its proper divisors (47693838).

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

43878066 is a wasteful number, since it uses less digits than its factorization.

43878066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317985.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 43878066 is about 6624.0520831286. The cubic root of 43878066 is about 352.7084185703.

The spelling of 43878066 in words is "forty-three million, eight hundred seventy-eight thousand, sixty-six".