402284 has 12 divisors (see below), whose sum is σ = 709464. Its totient is φ = 199584.

The previous prime is 402277. The next prime is 402299. The reversal of 402284 is 482204.

It is a plaindrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344 + ... + 960.

It is an arithmetic number, because the mean of its divisors is an integer number (59122).

2⁴⁰²²⁸⁴ is an apocalyptic number.

It is an amenable number.

402284 is a deficient number, since it is larger than the sum of its proper divisors (307180).

402284 is a wasteful number, since it uses less digits than its factorization.

402284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784 (or 782 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 402284 is about 634.2586223300. The cubic root of 402284 is about 73.8206026942.

Adding to 402284 its reverse (482204), we get a palindrome (884488).

It can be divided in two parts, 402 and 284, that added together give a palindrome (686).

The spelling of 402284 in words is "four hundred two thousand, two hundred eighty-four".