282788881 has 4 divisors (see below), whose sum is σ = 282838500. Its totient is φ = 282739264.

The previous prime is 282788873. The next prime is 282788893. The reversal of 282788881 is 188887282.

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

It can be written as a sum of positive squares in 2 ways, for example, as 255488256 + 27300625 = 15984^2 + 5225^2 .

It is a cyclic number.

It is not a de Polignac number, because 282788881 - 2³ = 282788873 is a prime.

It is a super-2 number, since 2×282788881² = 159939102434464322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (282788861) 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, 14956 + ... + 28093.

It is an arithmetic number, because the mean of its divisors is an integer number (70709625).

Almost surely, 2^282788881 is an apocalyptic number.

It is an amenable number.

282788881 is a deficient number, since it is larger than the sum of its proper divisors (49619).

282788881 is an equidigital number, since it uses as much as digits as its factorization.

282788881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49618.

The product of its digits is 917504, while the sum is 52.

The square root of 282788881 is about 16816.3278096022. The cubic root of 282788881 is about 656.3781413747.

The spelling of 282788881 in words is "two hundred eighty-two million, seven hundred eighty-eight thousand, eight hundred eighty-one".