20303629 has 2 divisors, whose sum is σ = 20303630. Its totient is φ = 20303628.

The previous prime is 20303623. The next prime is 20303663. The reversal of 20303629 is 92630302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20043529 + 260100 = 4477^2 + 510^2 .

It is a cyclic number.

It is not a de Polignac number, because 20303629 - 2⁵ = 20303597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20303623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10151814 + 10151815.

It is an arithmetic number, because the mean of its divisors is an integer number (10151815).

Almost surely, 2^20303629 is an apocalyptic number.

It is an amenable number.

20303629 is a deficient number, since it is larger than the sum of its proper divisors (1).

20303629 is an equidigital number, since it uses as much as digits as its factorization.

20303629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 20303629 is about 4505.9548377675. The cubic root of 20303629 is about 272.8084949969.

The spelling of 20303629 in words is "twenty million, three hundred three thousand, six hundred twenty-nine".