284218742 has 4 divisors (see below), whose sum is σ = 426328116. Its totient is φ = 142109370.

The previous prime is 284218717. The next prime is 284218769. The reversal of 284218742 is 247812482.

284218742 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 284218696 and 284218705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71054684 + ... + 71054687.

It is an arithmetic number, because the mean of its divisors is an integer number (106582029).

Almost surely, 2^284218742 is an apocalyptic number.

284218742 is a deficient number, since it is larger than the sum of its proper divisors (142109374).

284218742 is a wasteful number, since it uses less digits than its factorization.

284218742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142109373.

The product of its digits is 57344, while the sum is 38.

The square root of 284218742 is about 16858.7882719963. The cubic root of 284218742 is about 657.4825602221.

The spelling of 284218742 in words is "two hundred eighty-four million, two hundred eighteen thousand, seven hundred forty-two".