394680 has 128 divisors (see below), whose sum is σ = 1451520. Its totient is φ = 84480.

The previous prime is 394673. The next prime is 394699. The reversal of 394680 is 86493.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

394680 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 31 ways as a sum of consecutive naturals, for example, 17149 + ... + 17171.

It is an arithmetic number, because the mean of its divisors is an integer number (11340).

2³⁹⁴⁶⁸⁰ is an apocalyptic number.

394680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (725760).

394680 is an abundant number, since it is smaller than the sum of its proper divisors (1056840).

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

394680 is a wasteful number, since it uses less digits than its factorization.

394680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 394680 is about 628.2356245868. The cubic root of 394680 is about 73.3525202320.

The spelling of 394680 in words is "three hundred ninety-four thousand, six hundred eighty".