284642646 has 8 divisors (see below), whose sum is σ = 569285304. Its totient is φ = 94880880.

The previous prime is 284642639. The next prime is 284642681. The reversal of 284642646 is 646246482.

284642646 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

284642646 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 284642598 and 284642607.

It is a congruent number.

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, 23720215 + ... + 23720226.

It is an arithmetic number, because the mean of its divisors is an integer number (71160663).

Almost surely, 2^284642646 is an apocalyptic number.

284642646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

284642646 is a wasteful number, since it uses less digits than its factorization.

284642646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47440446.

The product of its digits is 442368, while the sum is 42.

The square root of 284642646 is about 16871.3557842872. The cubic root of 284642646 is about 657.8092698984.

The spelling of 284642646 in words is "two hundred eighty-four million, six hundred forty-two thousand, six hundred forty-six".