20433769 has 2 divisors, whose sum is σ = 20433770. Its totient is φ = 20433768.

The previous prime is 20433761. The next prime is 20433793. The reversal of 20433769 is 96733402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20358144 + 75625 = 4512^2 + 275^2 .

It is a cyclic number.

It is not a de Polignac number, because 20433769 - 2³ = 20433761 is a prime.

It is a super-2 number, since 2×20433769² = 835077831090722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20433761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10216884 + 10216885.

It is an arithmetic number, because the mean of its divisors is an integer number (10216885).

Almost surely, 2^20433769 is an apocalyptic number.

It is an amenable number.

20433769 is a deficient number, since it is larger than the sum of its proper divisors (1).

20433769 is an equidigital number, since it uses as much as digits as its factorization.

20433769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 20433769 is about 4520.3726616287. The cubic root of 20433769 is about 273.3901268396.

The spelling of 20433769 in words is "twenty million, four hundred thirty-three thousand, seven hundred sixty-nine".