284840446 has 8 divisors (see below), whose sum is σ = 466102584. Its totient is φ = 129472920.

The previous prime is 284840443. The next prime is 284840447. The reversal of 284840446 is 644048482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×284840446² = 162268159354957832, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 284840399 and 284840408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284840443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6473625 + ... + 6473668.

It is an arithmetic number, because the mean of its divisors is an integer number (58262823).

Almost surely, 2^284840446 is an apocalyptic number.

284840446 is a deficient number, since it is larger than the sum of its proper divisors (181262138).

284840446 is a wasteful number, since it uses less digits than its factorization.

284840446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12947306.

The product of its (nonzero) digits is 196608, while the sum is 40.

The square root of 284840446 is about 16877.2167729161. The cubic root of 284840446 is about 657.9616065772.

The spelling of 284840446 in words is "two hundred eighty-four million, eight hundred forty thousand, four hundred forty-six".