390284 has 6 divisors (see below), whose sum is σ = 683004. Its totient is φ = 195140.

The previous prime is 390281. The next prime is 390289. The reversal of 390284 is 482093.

It is not an unprimeable number, because it can be changed into a prime (390281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48782 + ... + 48789.

It is an arithmetic number, because the mean of its divisors is an integer number (113834).

2³⁹⁰²⁸⁴ is an apocalyptic number.

It is an amenable number.

390284 is a deficient number, since it is larger than the sum of its proper divisors (292720).

390284 is a wasteful number, since it uses less digits than its factorization.

390284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97575 (or 97573 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 390284 is about 624.7271404381. The cubic root of 390284 is about 73.0791660083.

Subtracting 390284 from its reverse (482093), we obtain a square (91809 = 303²).

The spelling of 390284 in words is "three hundred ninety thousand, two hundred eighty-four".