21016282 has 32 divisors (see below), whose sum is σ = 37013760. Its totient is φ = 8764800.

The previous prime is 21016279. The next prime is 21016297. The reversal of 21016282 is 28261012.

It is a super-3 number, since 3×21016282³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125763 + ... + 125929.

It is an arithmetic number, because the mean of its divisors is an integer number (1156680).

Almost surely, 2^21016282 is an apocalyptic number.

21016282 is a deficient number, since it is larger than the sum of its proper divisors (15997478).

21016282 is a wasteful number, since it uses less digits than its factorization.

21016282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 21016282 is about 4584.3518625865. The cubic root of 21016282 is about 275.9637020808.

Adding to 21016282 its reverse (28261012), we get a palindrome (49277294).

The spelling of 21016282 in words is "twenty-one million, sixteen thousand, two hundred eighty-two".