284240646 has 48 divisors (see below), whose sum is σ = 686415600. Its totient is φ = 84478464.

The previous prime is 284240641. The next prime is 284240651. The reversal of 284240646 is 646042482.

It is a happy number.

284240646 is a `hidden beast` number, since 2 + 8 + 4 + 2 + 4 + 0 + 646 = 666.

It is an interprime number because it is at equal distance from previous prime (284240641) and next prime (284240651).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 284240646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284240641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18631 + ... + 30258.

It is an arithmetic number, because the mean of its divisors is an integer number (14300325).

Almost surely, 2^284240646 is an apocalyptic number.

284240646 is an abundant number, since it is smaller than the sum of its proper divisors (402174954).

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

284240646 is a wasteful number, since it uses less digits than its factorization.

284240646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48933 (or 48930 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 36.

The square root of 284240646 is about 16859.4378909856. The cubic root of 284240646 is about 657.4994499458.

The spelling of 284240646 in words is "two hundred eighty-four million, two hundred forty thousand, six hundred forty-six".