21230935 has 8 divisors (see below), whose sum is σ = 27793296. Its totient is φ = 15440640.

The previous prime is 21230927. The next prime is 21230941. The reversal of 21230935 is 53903212.

It is a happy number.

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

It is not a de Polignac number, because 21230935 - 2³ = 21230927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192954 + ... + 193063.

It is an arithmetic number, because the mean of its divisors is an integer number (3474162).

Almost surely, 2^21230935 is an apocalyptic number.

21230935 is a deficient number, since it is larger than the sum of its proper divisors (6562361).

21230935 is a wasteful number, since it uses less digits than its factorization.

21230935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386033.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 21230935 is about 4607.7038750336. The cubic root of 21230935 is about 276.9000538690.

The spelling of 21230935 in words is "twenty-one million, two hundred thirty thousand, nine hundred thirty-five".