284930638 has 8 divisors (see below), whose sum is σ = 436489632. Its totient is φ = 139434096.

The previous prime is 284930629. The next prime is 284930671. The reversal of 284930638 is 836039482.

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

It is a junction number, because it is equal to n+sod(n) for n = 284930594 and 284930603.

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, 1515495 + ... + 1515682.

It is an arithmetic number, because the mean of its divisors is an integer number (54561204).

Almost surely, 2^284930638 is an apocalyptic number.

284930638 is a deficient number, since it is larger than the sum of its proper divisors (151558994).

284930638 is a wasteful number, since it uses less digits than its factorization.

284930638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3031226.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 284930638 is about 16879.8885659829. Note that the first 3 decimals coincide. The cubic root of 284930638 is about 658.0310449964.

It can be divided in two parts, 2849306 and 38, that added together give a square (2849344 = 1688²).

The spelling of 284930638 in words is "two hundred eighty-four million, nine hundred thirty thousand, six hundred thirty-eight".