20707433 has 2 divisors, whose sum is σ = 20707434. Its totient is φ = 20707432.

The previous prime is 20707403. The next prime is 20707439. The reversal of 20707433 is 33470702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20313049 + 394384 = 4507^2 + 628^2 .

It is a cyclic number.

It is not a de Polignac number, because 20707433 - 2⁶ = 20707369 is a prime.

It is a super-4 number, since 4×20707433⁴ (a number of 30 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (20707439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10353716 + 10353717.

It is an arithmetic number, because the mean of its divisors is an integer number (10353717).

Almost surely, 2^20707433 is an apocalyptic number.

It is an amenable number.

20707433 is a deficient number, since it is larger than the sum of its proper divisors (1).

20707433 is an equidigital number, since it uses as much as digits as its factorization.

20707433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 26.

The square root of 20707433 is about 4550.5420556237. The cubic root of 20707433 is about 274.6051987677.

The spelling of 20707433 in words is "twenty million, seven hundred seven thousand, four hundred thirty-three".