20330733 has 4 divisors (see below), whose sum is σ = 27107648. Its totient is φ = 13553820.

The previous prime is 20330731. The next prime is 20330753. The reversal of 20330733 is 33703302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20330733 - 2¹ = 20330731 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20330731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3388453 + ... + 3388458.

It is an arithmetic number, because the mean of its divisors is an integer number (6776912).

Almost surely, 2^20330733 is an apocalyptic number.

It is an amenable number.

20330733 is a deficient number, since it is larger than the sum of its proper divisors (6776915).

20330733 is an equidigital number, since it uses as much as digits as its factorization.

20330733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6776914.

The product of its (nonzero) digits is 1134, while the sum is 21.

The square root of 20330733 is about 4508.9614103472. The cubic root of 20330733 is about 272.9298347770.

The spelling of 20330733 in words is "twenty million, three hundred thirty thousand, seven hundred thirty-three".