282633221 has 8 divisors (see below), whose sum is σ = 305138904. Its totient is φ = 260236800.

The previous prime is 282633203. The next prime is 282633229. The reversal of 282633221 is 122336282.

It can be written as a sum of positive squares in 4 ways, for example, as 26152996 + 256480225 = 5114^2 + 16015^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 282633221 - 2¹⁴ = 282616837 is a prime.

It is a super-2 number, since 2×282633221² = 159763075225669682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (282633229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21896 + ... + 32321.

It is an arithmetic number, because the mean of its divisors is an integer number (38142363).

Almost surely, 2^282633221 is an apocalyptic number.

It is an amenable number.

282633221 is a deficient number, since it is larger than the sum of its proper divisors (22505683).

282633221 is a wasteful number, since it uses less digits than its factorization.

282633221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54631.

The product of its digits is 6912, while the sum is 29.

The square root of 282633221 is about 16811.6989325886. The cubic root of 282633221 is about 656.2576857029.

The spelling of 282633221 in words is "two hundred eighty-two million, six hundred thirty-three thousand, two hundred twenty-one".