21060338 has 8 divisors (see below), whose sum is σ = 34020588. Its totient is φ = 9720144.

The previous prime is 21060329. The next prime is 21060359. The reversal of 21060338 is 83306012.

It can be written as a sum of positive squares in 2 ways, for example, as 17952169 + 3108169 = 4237^2 + 1763^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404981 + ... + 405032.

Almost surely, 2^21060338 is an apocalyptic number.

21060338 is a deficient number, since it is larger than the sum of its proper divisors (12960250).

21060338 is a wasteful number, since it uses less digits than its factorization.

21060338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810028.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 21060338 is about 4589.1543883378. The cubic root of 21060338 is about 276.1563998396.

The spelling of 21060338 in words is "twenty-one million, sixty thousand, three hundred thirty-eight".