43427904 has 112 divisors (see below), whose sum is σ = 125626368. Its totient is φ = 13160448.

The previous prime is 43427903. The next prime is 43427947. The reversal of 43427904 is 40972434.

It is not an unprimeable number, because it can be changed into a prime (43427903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316924 + ... + 317060.

It is an arithmetic number, because the mean of its divisors is an integer number (1121664).

Almost surely, 2^43427904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43427904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62813184).

43427904 is an abundant number, since it is smaller than the sum of its proper divisors (82198464).

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

43427904 is a wasteful number, since it uses less digits than its factorization.

43427904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 43427904 is about 6589.9851289665. The cubic root of 43427904 is about 351.4980794120.

It can be divided in two parts, 4342 and 7904, that added together give a triangular number (12246 = T₁₅₆).

The spelling of 43427904 in words is "forty-three million, four hundred twenty-seven thousand, nine hundred four".