282081481 has 4 divisors (see below), whose sum is σ = 307725264. Its totient is φ = 256437700.

The previous prime is 282081479. The next prime is 282081487. The reversal of 282081481 is 184180282.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 282081481 - 2¹ = 282081479 is a prime.

It is a super-2 number, since 2×282081481² = 159139923846306722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (282081487) 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 in 3 ways as a sum of consecutive naturals, for example, 12821875 + ... + 12821896.

It is an arithmetic number, because the mean of its divisors is an integer number (76931316).

Almost surely, 2^282081481 is an apocalyptic number.

It is an amenable number.

282081481 is a deficient number, since it is larger than the sum of its proper divisors (25643783).

282081481 is a wasteful number, since it uses less digits than its factorization.

282081481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25643782.

The product of its (nonzero) digits is 8192, while the sum is 34.

The square root of 282081481 is about 16795.2815099956. The cubic root of 282081481 is about 655.8303715996.

The spelling of 282081481 in words is "two hundred eighty-two million, eighty-one thousand, four hundred eighty-one".