20790133 has 32 divisors (see below), whose sum is σ = 27578880. Its totient is φ = 15206400.

The previous prime is 20790103. The next prime is 20790139. The reversal of 20790133 is 33109702.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20790133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20790098 and 20790107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20790139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137608 + ... + 137758.

It is an arithmetic number, because the mean of its divisors is an integer number (861840).

Almost surely, 2^20790133 is an apocalyptic number.

It is an amenable number.

20790133 is a deficient number, since it is larger than the sum of its proper divisors (6788747).

20790133 is a wasteful number, since it uses less digits than its factorization.

20790133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 20790133 is about 4559.6198306438. The cubic root of 20790133 is about 274.9702799838.

Adding to 20790133 its reverse (33109702), we get a palindrome (53899835).

The spelling of 20790133 in words is "twenty million, seven hundred ninety thousand, one hundred thirty-three".