478340 has 12 divisors (see below), whose sum is σ = 1004556. Its totient is φ = 191328.

The previous prime is 478339. The next prime is 478343. The reversal of 478340 is 43874.

It can be written as a sum of positive squares in 2 ways, for example, as 232324 + 246016 = 482^2 + 496^2 .

It is a d-powerful number, because it can be written as 4⁸ + 7⁶ + 3⁵ + 8⁵ + 4⁹ + 0 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11939 + ... + 11978.

It is an arithmetic number, because the mean of its divisors is an integer number (83713).

2⁴⁷⁸³⁴⁰ is an apocalyptic number.

It is an amenable number.

478340 is an abundant number, since it is smaller than the sum of its proper divisors (526216).

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

478340 is a wasteful number, since it uses less digits than its factorization.

478340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23926 (or 23924 counting only the distinct ones).

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

The square root of 478340 is about 691.6212836517. The cubic root of 478340 is about 78.2069891255.

It can be divided in two parts, 478 and 340, that added together give a palindrome (818).

The spelling of 478340 in words is "four hundred seventy-eight thousand, three hundred forty".