478446 has 16 divisors (see below), whose sum is σ = 998784. Its totient is φ = 152504.

The previous prime is 478441. The next prime is 478451. The reversal of 478446 is 644874.

It is an interprime number because it is at equal distance from previous prime (478441) and next prime (478451).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478441) by changing a digit.

478446 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 7 ways as a sum of consecutive naturals, for example, 1596 + ... + 1871.

It is an arithmetic number, because the mean of its divisors is an integer number (62424).

2⁴⁷⁸⁴⁴⁶ is an apocalyptic number.

478446 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

478446 is an abundant number, since it is smaller than the sum of its proper divisors (520338).

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

478446 is a wasteful number, since it uses less digits than its factorization.

478446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3495.

The product of its digits is 21504, while the sum is 33.

The square root of 478446 is about 691.6979109409. The cubic root of 478446 is about 78.2127655806.

The spelling of 478446 in words is "four hundred seventy-eight thousand, four hundred forty-six".