20733389 has 8 divisors (see below), whose sum is σ = 22529280. Its totient is φ = 19008000.

The previous prime is 20733359. The next prime is 20733467. The reversal of 20733389 is 98333702.

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 20733389 - 2⁸ = 20733133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20733359) 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, 17012 + ... + 18189.

It is an arithmetic number, because the mean of its divisors is an integer number (2816160).

Almost surely, 2^20733389 is an apocalyptic number.

It is an amenable number.

20733389 is a deficient number, since it is larger than the sum of its proper divisors (1795891).

20733389 is a wasteful number, since it uses less digits than its factorization.

20733389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35251.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 20733389 is about 4553.3931304029. The cubic root of 20733389 is about 274.7198866760.

The spelling of 20733389 in words is "twenty million, seven hundred thirty-three thousand, three hundred eighty-nine".