21704301 has 16 divisors (see below), whose sum is σ = 32243200. Its totient is φ = 14429664.

The previous prime is 21704299. The next prime is 21704303. The reversal of 21704301 is 10340712.

It is an interprime number because it is at equal distance from previous prime (21704299) and next prime (21704303).

It is not a de Polignac number, because 21704301 - 2¹ = 21704299 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21704303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11460 + ... + 13218.

It is an arithmetic number, because the mean of its divisors is an integer number (2015200).

Almost surely, 2^21704301 is an apocalyptic number.

It is an amenable number.

21704301 is a deficient number, since it is larger than the sum of its proper divisors (10538899).

21704301 is a wasteful number, since it uses less digits than its factorization.

21704301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2225 (or 2219 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 21704301 is about 4658.7875032030. The cubic root of 21704301 is about 278.9428718736.

The spelling of 21704301 in words is "twenty-one million, seven hundred four thousand, three hundred one".