20332369 has 2 divisors, whose sum is σ = 20332370. Its totient is φ = 20332368.

The previous prime is 20332363. The next prime is 20332397. The reversal of 20332369 is 96323302.

It is an a-pointer prime, because the next prime (20332397) can be obtained adding 20332369 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20250000 + 82369 = 4500^2 + 287^2 .

It is a cyclic number.

It is not a de Polignac number, because 20332369 - 2⁷ = 20332241 is a prime.

It is a super-2 number, since 2×20332369² = 826810458304322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20332363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10166184 + 10166185.

It is an arithmetic number, because the mean of its divisors is an integer number (10166185).

Almost surely, 2^20332369 is an apocalyptic number.

It is an amenable number.

20332369 is a deficient number, since it is larger than the sum of its proper divisors (1).

20332369 is an equidigital number, since it uses as much as digits as its factorization.

20332369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 28.

The square root of 20332369 is about 4509.1428231982. The cubic root of 20332369 is about 272.9371554055.

The spelling of 20332369 in words is "twenty million, three hundred thirty-two thousand, three hundred sixty-nine".