423878 has 32 divisors (see below), whose sum is σ = 834624. Its totient is φ = 156672.

The previous prime is 423869. The next prime is 423883. The reversal of 423878 is 878324.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

423878 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 in 15 ways as a sum of consecutive naturals, for example, 3026 + ... + 3162.

It is an arithmetic number, because the mean of its divisors is an integer number (26082).

2⁴²³⁸⁷⁸ is an apocalyptic number.

423878 is a deficient number, since it is larger than the sum of its proper divisors (410746).

423878 is a wasteful number, since it uses less digits than its factorization.

423878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176.

The product of its digits is 10752, while the sum is 32.

The square root of 423878 is about 651.0591370989. The cubic root of 423878 is about 75.1185089394.

The spelling of 423878 in words is "four hundred twenty-three thousand, eight hundred seventy-eight".