284930881 has 4 divisors (see below), whose sum is σ = 288944064. Its totient is φ = 280917700.

The previous prime is 284930879. The next prime is 284930903. The reversal of 284930881 is 188039482.

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 284930881 - 2¹ = 284930879 is a prime.

It is a super-2 number, since 2×284930881² = 162371213894872322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (284930851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2006485 + ... + 2006626.

It is an arithmetic number, because the mean of its divisors is an integer number (72236016).

Almost surely, 2^284930881 is an apocalyptic number.

It is an amenable number.

284930881 is a deficient number, since it is larger than the sum of its proper divisors (4013183).

284930881 is an equidigital number, since it uses as much as digits as its factorization.

284930881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4013182.

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 284930881 is about 16879.8957638962. The cubic root of 284930881 is about 658.0312320612.

The spelling of 284930881 in words is "two hundred eighty-four million, nine hundred thirty thousand, eight hundred eighty-one".