21002848 has 24 divisors (see below), whose sum is σ = 41474160. Its totient is φ = 10469760.

The previous prime is 21002797. The next prime is 21002857. The reversal of 21002848 is 84820012.

It is a super-2 number, since 2×21002848² = 882239248222208, which contains 22 as substring.

It is a congruent 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, 12693 + ... + 14251.

It is an arithmetic number, because the mean of its divisors is an integer number (1728090).

Almost surely, 2^21002848 is an apocalyptic number.

It is an amenable number.

21002848 is a deficient number, since it is larger than the sum of its proper divisors (20471312).

21002848 is a wasteful number, since it uses less digits than its factorization.

21002848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990 (or 1982 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 21002848 is about 4582.8864266966. The cubic root of 21002848 is about 275.9048891633.

The spelling of 21002848 in words is "twenty-one million, two thousand, eight hundred forty-eight".