284713538 has 4 divisors (see below), whose sum is σ = 427070310. Its totient is φ = 142356768.

The previous prime is 284713531. The next prime is 284713547. The reversal of 284713538 is 835317482.

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

It can be written as a sum of positive squares in only one way, i.e., 234487969 + 50225569 = 15313^2 + 7087^2 .

It is a junction number, because it is equal to n+sod(n) for n = 284713495 and 284713504.

It is not an unprimeable number, because it can be changed into a prime (284713531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71178383 + ... + 71178386.

Almost surely, 2^284713538 is an apocalyptic number.

284713538 is a deficient number, since it is larger than the sum of its proper divisors (142356772).

284713538 is a wasteful number, since it uses less digits than its factorization.

284713538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142356771.

The product of its digits is 161280, while the sum is 41.

The square root of 284713538 is about 16873.4566109022. The cubic root of 284713538 is about 657.8638758455.

The spelling of 284713538 in words is "two hundred eighty-four million, seven hundred thirteen thousand, five hundred thirty-eight".