20223733 has 4 divisors (see below), whose sum is σ = 21288160. Its totient is φ = 19159308.

The previous prime is 20223703. The next prime is 20223767. The reversal of 20223733 is 33732202.

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 a cyclic number.

It is not a de Polignac number, because 20223733 - 2⁹ = 20223221 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 (20223703) 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, 532185 + ... + 532222.

It is an arithmetic number, because the mean of its divisors is an integer number (5322040).

Almost surely, 2^20223733 is an apocalyptic number.

It is an amenable number.

20223733 is a deficient number, since it is larger than the sum of its proper divisors (1064427).

20223733 is a wasteful number, since it uses less digits than its factorization.

20223733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064426.

The product of its (nonzero) digits is 1512, while the sum is 22.

The square root of 20223733 is about 4497.0804973894. The cubic root of 20223733 is about 272.4501853222.

Adding to 20223733 its reverse (33732202), we get a palindrome (53955935).

The spelling of 20223733 in words is "twenty million, two hundred twenty-three thousand, seven hundred thirty-three".