20033071 has 4 divisors (see below), whose sum is σ = 20361544. Its totient is φ = 19704600.

The previous prime is 20033053. The next prime is 20033077. The reversal of 20033071 is 17033002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20033071 - 2¹⁵ = 20000303 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 (20033077) 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, 164145 + ... + 164266.

It is an arithmetic number, because the mean of its divisors is an integer number (5090386).

Almost surely, 2^20033071 is an apocalyptic number.

20033071 is a deficient number, since it is larger than the sum of its proper divisors (328473).

20033071 is an equidigital number, since it uses as much as digits as its factorization.

20033071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328472.

The product of its (nonzero) digits is 126, while the sum is 16.

The square root of 20033071 is about 4475.8318779865. The cubic root of 20033071 is about 271.5912934453.

Adding to 20033071 its reverse (17033002), we get a palindrome (37066073).

The spelling of 20033071 in words is "twenty million, thirty-three thousand, seventy-one".