402384 has 40 divisors (see below), whose sum is σ = 1062432. Its totient is φ = 131200.

The previous prime is 402383. The next prime is 402403. The reversal of 402384 is 483204.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 402384.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3934 + ... + 4034.

2⁴⁰²³⁸⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (531216).

402384 is an abundant number, since it is smaller than the sum of its proper divisors (660048).

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

402384 is a wasteful number, since it uses less digits than its factorization.

402384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 402384 is about 634.3374496276. The cubic root of 402384 is about 73.8267189775.

Adding to 402384 its reverse (483204), we get a palindrome (885588).

The spelling of 402384 in words is "four hundred two thousand, three hundred eighty-four".