282638811 has 72 divisors (see below), whose sum is σ = 491341824. Its totient is φ = 143881920.

The previous prime is 282638791. The next prime is 282638827. The reversal of 282638811 is 118836282.

It is not a de Polignac number, because 282638811 - 2⁶ = 282638747 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 282638811.

It is not an unprimeable number, because it can be changed into a prime (282638711) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 769950 + ... + 770316.

It is an arithmetic number, because the mean of its divisors is an integer number (6824192).

Almost surely, 2^282638811 is an apocalyptic number.

282638811 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

282638811 is a deficient number, since it is larger than the sum of its proper divisors (208703013).

282638811 is a wasteful number, since it uses less digits than its factorization.

282638811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 421 counting only the distinct ones).

The product of its digits is 36864, while the sum is 39.

The square root of 282638811 is about 16811.8651850412. The cubic root of 282638811 is about 656.2620122246.

The spelling of 282638811 in words is "two hundred eighty-two million, six hundred thirty-eight thousand, eight hundred eleven".