284239838 has 16 divisors (see below), whose sum is σ = 434302560. Its totient is φ = 139490400.

The previous prime is 284239831. The next prime is 284239841. The reversal of 284239838 is 838932482.

It is a junction number, because it is equal to n+sod(n) for n = 284239792 and 284239801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284239831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28148 + ... + 36888.

It is an arithmetic number, because the mean of its divisors is an integer number (27143910).

Almost surely, 2^284239838 is an apocalyptic number.

284239838 is a deficient number, since it is larger than the sum of its proper divisors (150062722).

284239838 is a wasteful number, since it uses less digits than its factorization.

284239838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9043.

The product of its digits is 663552, while the sum is 47.

The square root of 284239838 is about 16859.4139281293. The cubic root of 284239838 is about 657.4988269290.

The spelling of 284239838 in words is "two hundred eighty-four million, two hundred thirty-nine thousand, eight hundred thirty-eight".