282138938 has 4 divisors (see below), whose sum is σ = 423208410. Its totient is φ = 141069468.

The previous prime is 282138887. The next prime is 282138947. The reversal of 282138938 is 839831282.

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., 163916809 + 118222129 = 12803^2 + 10873^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70534733 + ... + 70534736.

Almost surely, 2^282138938 is an apocalyptic number.

282138938 is a deficient number, since it is larger than the sum of its proper divisors (141069472).

282138938 is a wasteful number, since it uses less digits than its factorization.

282138938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141069471.

The product of its digits is 165888, while the sum is 44.

The square root of 282138938 is about 16796.9919330814. The cubic root of 282138938 is about 655.8748971357.

The spelling of 282138938 in words is "two hundred eighty-two million, one hundred thirty-eight thousand, nine hundred thirty-eight".