21300710 has 32 divisors (see below), whose sum is σ = 40953600. Its totient is φ = 7953120.

The previous prime is 21300679. The next prime is 21300733. The reversal of 21300710 is 1700312.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 12701 + ... + 14279.

It is an arithmetic number, because the mean of its divisors is an integer number (1279800).

Almost surely, 2^21300710 is an apocalyptic number.

21300710 is a deficient number, since it is larger than the sum of its proper divisors (19652890).

21300710 is a wasteful number, since it uses less digits than its factorization.

21300710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 21300710 is about 4615.2692229165. The cubic root of 21300710 is about 277.2030641405.

The spelling of 21300710 in words is "twenty-one million, three hundred thousand, seven hundred ten".