43478164 has 6 divisors (see below), whose sum is σ = 76086794. Its totient is φ = 21739080.

The previous prime is 43478161. The next prime is 43478189. The reversal of 43478164 is 46187434.

43478164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 22848400 + 20629764 = 4780^2 + 4542^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43478161) 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 as a sum of consecutive naturals, namely, 5434767 + ... + 5434774.

Almost surely, 2^43478164 is an apocalyptic number.

It is an amenable number.

43478164 is a deficient number, since it is larger than the sum of its proper divisors (32608630).

43478164 is a wasteful number, since it uses less digits than its factorization.

43478164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10869545 (or 10869543 counting only the distinct ones).

The product of its digits is 64512, while the sum is 37.

The square root of 43478164 is about 6593.7973884553. The cubic root of 43478164 is about 351.6336257700.

The spelling of 43478164 in words is "forty-three million, four hundred seventy-eight thousand, one hundred sixty-four".