20733061 has 4 divisors (see below), whose sum is σ = 21293452. Its totient is φ = 20172672.

The previous prime is 20733029. The next prime is 20733067. The reversal of 20733061 is 16033702.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16033702 = 2 ⋅8016851.

It can be written as a sum of positive squares in 2 ways, for example, as 16402500 + 4330561 = 4050^2 + 2081^2 .

It is a cyclic number.

It is not a de Polignac number, because 20733061 - 2⁵ = 20733029 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 (20733067) 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, 280140 + ... + 280213.

It is an arithmetic number, because the mean of its divisors is an integer number (5323363).

Almost surely, 2^20733061 is an apocalyptic number.

It is an amenable number.

20733061 is a deficient number, since it is larger than the sum of its proper divisors (560391).

20733061 is an equidigital number, since it uses as much as digits as its factorization.

20733061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560390.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 20733061 is about 4553.3571131639. The cubic root of 20733061 is about 274.7184379886.

Adding to 20733061 its reverse (16033702), we get a palindrome (36766763).

The spelling of 20733061 in words is "twenty million, seven hundred thirty-three thousand, sixty-one".