21026482 has 16 divisors (see below), whose sum is σ = 32394240. Its totient is φ = 10232352.

The previous prime is 21026477. The next prime is 21026497. The reversal of 21026482 is 28462012.

It is a happy number.

It is a super-2 number, since 2×21026482² = 884225890592648, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10623 + ... + 12445.

It is an arithmetic number, because the mean of its divisors is an integer number (2024640).

Almost surely, 2^21026482 is an apocalyptic number.

21026482 is a deficient number, since it is larger than the sum of its proper divisors (11367758).

21026482 is a wasteful number, since it uses less digits than its factorization.

21026482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1977.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 21026482 is about 4585.4642076893. The cubic root of 21026482 is about 276.0083400826.

Adding to 21026482 its reverse (28462012), we get a palindrome (49488494).

The spelling of 21026482 in words is "twenty-one million, twenty-six thousand, four hundred eighty-two".