21050282 has 8 divisors (see below), whose sum is σ = 34445952. Its totient is φ = 9568300.

The previous prime is 21050279. The next prime is 21050287. The reversal of 21050282 is 28205012.

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

It is a super-2 number, since 2×21050282² = 886228744559048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21050287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 478394 + ... + 478437.

It is an arithmetic number, because the mean of its divisors is an integer number (4305744).

Almost surely, 2^21050282 is an apocalyptic number.

21050282 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21050282 is a deficient number, since it is larger than the sum of its proper divisors (13395670).

21050282 is a wasteful number, since it uses less digits than its factorization.

21050282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956844.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 21050282 is about 4588.0586308372. The cubic root of 21050282 is about 276.1124393094.

Adding to 21050282 its reverse (28205012), we get a palindrome (49255294).

The spelling of 21050282 in words is "twenty-one million, fifty thousand, two hundred eighty-two".