• 478 can be written using four 4's:
478 has 4 divisors (see below), whose sum is σ = 720. Its totient is φ = 238.
The previous prime is 467. The next prime is 479. The reversal of 478 is 874.
It is a happy number.
478 is nontrivially palindromic in base 14.
It is a semiprime because it is the product of two primes.
It is an alternating number because its digits alternate between even and odd.
478 is an undulating number in base 14.
It is a plaindrome in base 10, base 12, base 13 and base 16.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (479) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 118 + ... + 121.
It is an arithmetic number, because the mean of its divisors is an integer number (180).
2478 is an apocalyptic number.
478 is a deficient number, since it is larger than the sum of its proper divisors (242).
478 is a wasteful number, since it uses less digits than its factorization.
478 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 241.
The product of its digits is 224, while the sum is 19.
The square root of 478 is about 21.8632111091. The cubic root of 478 is about 7.8188455113.
It can be divided in two parts, 47 and 8, that added together give a palindrome (55).
The spelling of 478 in words is "four hundred seventy-eight", and thus it is an aban number.
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