21052848 has 20 divisors (see below), whose sum is σ = 54386648. Its totient is φ = 7017600.

The previous prime is 21052847. The next prime is 21052853. The reversal of 21052848 is 84825012.

It is a super-2 number, since 2×21052848² = 886444817822208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21052841) 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, 219253 + ... + 219348.

Almost surely, 2^21052848 is an apocalyptic number.

It is an amenable number.

21052848 is an abundant number, since it is smaller than the sum of its proper divisors (33333800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21052848 is a wasteful number, since it uses less digits than its factorization.

21052848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438612 (or 438606 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 21052848 is about 4588.3382612881. The cubic root of 21052848 is about 276.1236580939.

The spelling of 21052848 in words is "twenty-one million, fifty-two thousand, eight hundred forty-eight".