386478 has 32 divisors (see below), whose sum is σ = 911520. Its totient is φ = 120960.

The previous prime is 386471. The next prime is 386489. The reversal of 386478 is 874683.

386478 is a `hidden beast` number, since 3 + 8 + 647 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386471) by changing a digit.

386478 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, 708 + ... + 1128.

It is an arithmetic number, because the mean of its divisors is an integer number (28485).

2³⁸⁶⁴⁷⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 386478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (455760).

386478 is an abundant number, since it is smaller than the sum of its proper divisors (525042).

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

386478 is a wasteful number, since it uses less digits than its factorization.

386478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449 (or 443 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 386478 is about 621.6735477725. The cubic root of 386478 is about 72.8408366869.

The spelling of 386478 in words is "three hundred eighty-six thousand, four hundred seventy-eight".