21300938 has 8 divisors (see below), whose sum is σ = 33633120. Its totient is φ = 10089900.

The previous prime is 21300907. The next prime is 21300941. The reversal of 21300938 is 83900312.

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

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, 280238 + ... + 280313.

It is an arithmetic number, because the mean of its divisors is an integer number (4204140).

Almost surely, 2^21300938 is an apocalyptic number.

21300938 is a deficient number, since it is larger than the sum of its proper divisors (12332182).

21300938 is a wasteful number, since it uses less digits than its factorization.

21300938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560572.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 21300938 is about 4615.2939234679. The cubic root of 21300938 is about 277.2040531853.

The spelling of 21300938 in words is "twenty-one million, three hundred thousand, nine hundred thirty-eight".