21334773 has 8 divisors (see below), whose sum is σ = 28491328. Its totient is φ = 14200704.

The previous prime is 21334763. The next prime is 21334787. The reversal of 21334773 is 37743312.

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

It is not a de Polignac number, because 21334773 - 2¹⁸ = 21072629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21334773.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21334723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3265 + ... + 7302.

It is an arithmetic number, because the mean of its divisors is an integer number (3561416).

Almost surely, 2^21334773 is an apocalyptic number.

It is an amenable number.

21334773 is a deficient number, since it is larger than the sum of its proper divisors (7156555).

21334773 is a wasteful number, since it uses less digits than its factorization.

21334773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11243.

The product of its digits is 10584, while the sum is 30.

The square root of 21334773 is about 4618.9579993760. The cubic root of 21334773 is about 277.3507484069.

The spelling of 21334773 in words is "twenty-one million, three hundred thirty-four thousand, seven hundred seventy-three".