43478 has 4 divisors (see below), whose sum is σ = 65220. Its totient is φ = 21738.

The previous prime is 43457. The next prime is 43481. The reversal of 43478 is 87434.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87434 = 2 ⋅43717.

It is a d-powerful number, because it can be written as 4 + 3⁸ + 4⁶ + 7² + 8⁵ .

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

43478 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10868 + ... + 10871.

It is an arithmetic number, because the mean of its divisors is an integer number (16305).

2⁴³⁴⁷⁸ is an apocalyptic number.

43478 is a deficient number, since it is larger than the sum of its proper divisors (21742).

43478 is a wasteful number, since it uses less digits than its factorization.

43478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21741.

The product of its digits is 2688, while the sum is 26.

The square root of 43478 is about 208.5137885129. The cubic root of 43478 is about 35.1633183648.

Subtracting 43478 from its reverse (87434), we obtain a triangular number (43956 = T₂₉₆).

It can be divided in two parts, 434 and 78, that added together give a 9-th power (512 = 2⁹).

The spelling of 43478 in words is "forty-three thousand, four hundred seventy-eight".