21336339 has 8 divisors (see below), whose sum is σ = 29366272. Its totient is φ = 13765320.

The previous prime is 21336331. The next prime is 21336349. The reversal of 21336339 is 93363312.

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

It is not a de Polignac number, because 21336339 - 2³ = 21336331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21336331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114619 + ... + 114804.

It is an arithmetic number, because the mean of its divisors is an integer number (3670784).

Almost surely, 2^21336339 is an apocalyptic number.

21336339 is a deficient number, since it is larger than the sum of its proper divisors (8029933).

21336339 is a wasteful number, since it uses less digits than its factorization.

21336339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229457.

The product of its digits is 8748, while the sum is 30.

The square root of 21336339 is about 4619.1275150184. The cubic root of 21336339 is about 277.3575342090.

The spelling of 21336339 in words is "twenty-one million, three hundred thirty-six thousand, three hundred thirty-nine".