394728 has 16 divisors (see below), whose sum is σ = 986880. Its totient is φ = 131568.

The previous prime is 394727. The next prime is 394729. The reversal of 394728 is 827493.

It is an interprime number because it is at equal distance from previous prime (394727) and next prime (394729).

It is not an unprimeable number, because it can be changed into a prime (394721) 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, 8200 + ... + 8247.

It is an arithmetic number, because the mean of its divisors is an integer number (61680).

2³⁹⁴⁷²⁸ is an apocalyptic number.

It is an amenable number.

394728 is an abundant number, since it is smaller than the sum of its proper divisors (592152).

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

394728 is a wasteful number, since it uses less digits than its factorization.

394728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16456 (or 16452 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 394728 is about 628.2738256525. The cubic root of 394728 is about 73.3554937619.

Adding to 394728 its reverse (827493), we get a palindrome (1222221).

The spelling of 394728 in words is "three hundred ninety-four thousand, seven hundred twenty-eight".