21833713 has 8 divisors (see below), whose sum is σ = 24007680. Its totient is φ = 19691280.

The previous prime is 21833711. The next prime is 21833719. The reversal of 21833713 is 31733812.

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

It is a cyclic number.

It is not a de Polignac number, because 21833713 - 2¹ = 21833711 is a prime.

It is a super-2 number, since 2×21833713² = 953422046732738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21833711) 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, 6418 + ... + 9211.

It is an arithmetic number, because the mean of its divisors is an integer number (3000960).

Almost surely, 2^21833713 is an apocalyptic number.

It is an amenable number.

21833713 is a deficient number, since it is larger than the sum of its proper divisors (2173967).

21833713 is a wasteful number, since it uses less digits than its factorization.

21833713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15767.

The product of its digits is 3024, while the sum is 28.

The square root of 21833713 is about 4672.6558829000. The cubic root of 21833713 is about 279.4961730483.

Subtracting 21833713 from its reverse (31733812), we obtain a palindrome (9900099).

The spelling of 21833713 in words is "twenty-one million, eight hundred thirty-three thousand, seven hundred thirteen".