283638213 has 32 divisors (see below), whose sum is σ = 443520000. Its totient is φ = 178654896.

The previous prime is 283638211. The next prime is 283638253. The reversal of 283638213 is 312836382.

283638213 is a `hidden beast` number, since 2 + 8 + 3 + 638 + 2 + 13 = 666.

It is not a de Polignac number, because 283638213 - 2¹ = 283638211 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (283638211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 337648 + ... + 338486.

It is an arithmetic number, because the mean of its divisors is an integer number (13860000).

Almost surely, 2^283638213 is an apocalyptic number.

It is an amenable number.

283638213 is a deficient number, since it is larger than the sum of its proper divisors (159881787).

283638213 is a wasteful number, since it uses less digits than its factorization.

283638213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526 (or 1520 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 283638213 is about 16841.5620712569. The cubic root of 283638213 is about 657.0346096319.

The spelling of 283638213 in words is "two hundred eighty-three million, six hundred thirty-eight thousand, two hundred thirteen".