284981238 has 12 divisors (see below), whose sum is σ = 617459388. Its totient is φ = 94993740.

The previous prime is 284981197. The next prime is 284981261. The reversal of 284981238 is 832189482.

It is a junction number, because it is equal to n+sod(n) for n = 284981193 and 284981202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7916128 + ... + 7916163.

It is an arithmetic number, because the mean of its divisors is an integer number (51454949).

Almost surely, 2^284981238 is an apocalyptic number.

284981238 is an abundant number, since it is smaller than the sum of its proper divisors (332478150).

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

284981238 is a wasteful number, since it uses less digits than its factorization.

284981238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15832299 (or 15832296 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 284981238 is about 16881.3873245062. The cubic root of 284981238 is about 658.0699952947.

The spelling of 284981238 in words is "two hundred eighty-four million, nine hundred eighty-one thousand, two hundred thirty-eight".